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<link rel="EditURI" type="application/rsd+xml" href="https://oeis.org/w/api.php?action=rsd"/> <link rel="license" href="/wiki/The_OEIS_End-User_License_Agreement"/> <link rel="alternate" type="application/atom+xml" title="OeisWiki Atom feed" href="/w/index.php?title=Special:RecentChanges&feed=atom"/>  </head> <body class="mediawiki ltr sitedir-ltr mw-hide-empty-elt ns-0 ns-subject page-Index_Instructions_For_Updating_Index_to_OEIS rootpage-Index_Instructions_For_Updating_Index_to_OEIS skin-monobook action-view"><div id="globalWrapper"> <div id="column-content"> <div id="content" class="mw-body" role="main"> <a id="top"></a> <div id="siteNotice" class="mw-body-content"><div id="localNotice" lang="en" dir="ltr"><div class="mw-parser-output"><p>This site is supported by donations to <a rel="nofollow" class="external text" href="http://oeisf.org/">The OEIS Foundation</a>. </p></div></div></div> <div class="mw-indicators mw-body-content"> </div> <h1 id="firstHeading" class="firstHeading" lang="en">Index: Instructions For Updating Index to OEIS</h1> <div id="bodyContent" class="mw-body-content"> <div id="siteSub">From OeisWiki</div> <div id="contentSub"><div id="mw-fr-revisiontag" class="flaggedrevs_quality flaggedrevs_stable_synced plainlinks noprint nomobile"><img class="flaggedrevs-icon" src="/w/extensions/FlaggedRevs/frontend/modules/img/3.png" alt="This is a quality version of this page" title="This is a quality version of this page" />This is the <a href="/wiki/Help:Page_validation" title="Help:Page validation">stable version</a>, <a rel="nofollow" class="external text" href="https://oeis.org/w/index.php?title=Special:Log&type=review&page=Index:_Instructions_For_Updating_Index_to_OEIS">approved</a> on <i>2 June 2021</i>.<a id="mw-fr-revisiontoggle" class="fr-toggle-symbol" style="display:none;" title="show/hide details" >(+)</a><div id='mw-fr-revisiondetails'> <span class='fr-marker-60'><strong>Readability</strong>: <span class='fr-text-value'>Approved </span> </span> </div></div> </div> <div id="jump-to-nav" class="mw-jump">Jump to: <a href="#column-one">navigation</a>, <a href="#searchInput">search</a></div>  <div id="mw-content-text" lang="en" dir="ltr" class="mw-content-ltr"><div class="mw-parser-output"><div id="toc" class="toc"><div class="toctitle"><h2>Contents</h2></div> <ul> <li class="toclevel-1 tocsection-1"><a href="#Introduction"><span class="tocnumber">1</span> <span class="toctext">Introduction</span></a></li> <li class="toclevel-1 tocsection-2"><a href="#Adding_a_link_from_the_Index_to_a_sequence"><span class="tocnumber">2</span> <span class="toctext">Adding a link from the Index to a sequence</span></a></li> <li class="toclevel-1 tocsection-3"><a href="#Adding_a_link_from_a_sequence_to_the_Index"><span class="tocnumber">3</span> <span class="toctext">Adding a link from a sequence to the Index</span></a></li> <li class="toclevel-1 tocsection-4"><a href="#Creating_a_new_Index_entry"><span class="tocnumber">4</span> <span class="toctext">Creating a new Index entry</span></a></li> <li class="toclevel-1 tocsection-5"><a href="#Adding_an_anchor_to_an_Index_entry"><span class="tocnumber">5</span> <span class="toctext">Adding an anchor to an Index entry</span></a></li> <li class="toclevel-1 tocsection-6"><a href="#Adding_a_link_from_the_Index_to_the_Index"><span class="tocnumber">6</span> <span class="toctext">Adding a link from the Index to the Index</span></a></li> <li class="toclevel-1 tocsection-7"><a href="#Adding_a_new_Index_page"><span class="tocnumber">7</span> <span class="toctext">Adding a new Index page</span></a></li> </ul> </div> <h2><span class="mw-headline" id="Introduction">Introduction</span></h2> <ul><li> This page will explain: </li></ul> <dl><dd><ul><li> how to add a new entry to the <a href="/wiki/Index_to_OEIS" title="Index to OEIS"><b>Index to OEIS</b></a>, </li> <li> how to modify an existing entry in the <a href="/wiki/Index_to_OEIS" title="Index to OEIS"><b>Index to OEIS</b></a>, and </li> <li> how to add a link to the <a href="/wiki/Index_to_OEIS" title="Index to OEIS"><b>Index to OEIS</b></a> from a sequence in the <a rel="nofollow" class="external text" href="http://oeis.org"><b>OEIS<span style="position: relative; vertical-align: 1.25ex; line-height: 0.75ex; font-size: 0.75em;"><span style="position: relative; vertical-align: middle;">®</span></span></b></a></li></ul></dd></dl> <p><br /> </p> <ul><li> Updates to the Index are welcomed, but please be very careful. Remember that this is a scientific database. Please preserve the alphabetical order.</li> <li> Do not sign changes with your name (the History tab will show who made the changes).</li> <li> Don't forget that you often have to end a line with <br />, otherwise the next line may be combined with it.</li></ul> <p><br /> </p> <ul><li> <span style="color: red;"><b>Please be VERY CAREFUL when making changes!</b></span> If in doubt, consult one of the <a href="/wiki/Editors-in-Chief" class="mw-redirect" title="Editors-in-Chief">Editors-in-Chief</a> before making any changes.</li></ul> <p><br /> </p> <h2><span class="mw-headline" id="Adding_a_link_from_the_Index_to_a_sequence">Adding a link from the Index to a sequence</span></h2> <ul><li> Sequence numbers, like <a href="http://oeis.org/A123456">A123456</a>, automatically link to the sequence page in the <a href="http://oeis.org/" class="extiw" title="oeis:">OEIS</a>. Please DO NOT use the deprecated template forms {{oeis|<a href="http://oeis.org/A123456">A123456</a>}} or {{A|<a href="http://oeis.org/A123456">A123456</a>}}. Further options are described in the <a href="/wiki/Style_Sheet#Internal_links" title="Style Sheet">Style Sheet</a>.</li></ul> <p><br /> </p> <h2><span class="mw-headline" id="Adding_a_link_from_a_sequence_to_the_Index">Adding a link from a sequence to the Index</span></h2> <ul><li> This assumes the Index entry already has an "anchor". If not, see below.</li> <li> Put a line in the LINKS section of the sequence, using the format shown in these examples (which are from the Catalan numbers, <a href="http://oeis.org/A000108">A000108</a>):</li></ul> <dl><dd><ul><li> <tt><a href="/index/Cor#core">Index entries for "core" sequences</a></tt></li> <li> <tt><a href="/index/Ne#necklaces">Index entries for sequences related to necklaces</a></tt></li> <li> <tt><a href="/index/Par#parens">Index entries for sequences related to parenthesizing</a></tt></li> <li> <tt><a href="/index/Ro#rooted">Index entries for sequences related to rooted trees</a></tt></li></ul></dd> <dd> (Note that a sequence can have several links to the Index.)</dd></dl> <ul><li> The link has the form <tt><a href="/index/PPP#qqqq">Name of link</a></tt>,<br /></li></ul> <dl><dd> where "<tt>PPP</tt>" means that the Index entry is on the wiki page "Index_to_OEIS:_Section_PPP",<br /></dd> <dd> and "<tt>qqqq</tt>" is the anchor on that page. See <a href="/wiki/Index_to_OEIS" title="Index to OEIS"><b>Index to OEIS</b></a> for the full list of pages.</dd></dl> <p><br /> </p> <ul><li> A worked example. </li></ul> <dl><dd><ul><li> Suppose you notice a sequence in the OEIS, say <a href="http://oeis.org/A123456">A123456</a>, which mentions the Busy Beaver problem, but does not have link to the Index.</li> <li> You go to the main <a href="/wiki/Index_to_OEIS" title="Index to OEIS"><b>Index to OEIS</b></a> page, and you see that "Busy Beaver" would fall on the <a href="/wiki/Index_to_OEIS:_Section_Br" title="Index to OEIS: Section Br">Index_to_OEIS:_Section_Br</a> page in the alphabetical order.</li> <li> You go to the <a href="/wiki/Index_to_OEIS:_Section_Br" title="Index to OEIS: Section Br">Index_to_OEIS:_Section_Br</a> page, and by clicking the View Source tab or the Edit tab, you see these lines:</li></ul> <dl><dd> <tt><span id="beaver">''' Busy Beaver problem , sequences related to : '''</span></tt></dd> <dd> <tt>:Busy Beaver problem: <a href="http://oeis.org/A028444">A028444</a>*, <a href="http://oeis.org/A004147">A004147</a>*, <a href="http://oeis.org/A060843">A060843</a>*, <a href="http://oeis.org/A052200">A052200</a></tt></dd></dl> <ul><li> In the span line, <tt>id="beaver"</tt> tells you that the anchor you want is "beaver".</li> <li> So here is what you would add to <a href="http://oeis.org/A123456">A123456</a>:</li></ul> <dl><dd> <tt><a href="/index/Br#beaver">Index entries for sequences related to Busy Beaver problem</a></tt></dd></dl> <ul><li> You should also add <a href="http://oeis.org/A123456">A123456</a> to the Busy Beaver index entry.</li></ul></dd></dl> <p><br /> </p> <ul><li> If the entry doesn't yet exist in the Index then you should create it. If the entry does exist but does not have an anchor then you will have to create an anchor in the Index page.</li></ul> <p><br /> </p> <h2><span class="mw-headline" id="Creating_a_new_Index_entry">Creating a new Index entry</span></h2> <ul><li> The best advice is: look at an existing entry, and follow the same format.</li> <li> See for instance the page <a href="/wiki/Index_to_OEIS:_Section_Br" title="Index to OEIS: Section Br">Index_to_OEIS:_Section_Br</a>, which has a number of good examples.</li> <li> Click the View Source tab or the Edit tab to see what you need to type.</li></ul> <p><br /> <br /> </p> <h2><span class="mw-headline" id="Adding_an_anchor_to_an_Index_entry">Adding an anchor to an Index entry</span></h2> <ul><li>Suppose there is an Index entry with no anchor, looking like this:<br /></li></ul> <dl><dd> <tt>watermelon numbers: <a href="http://oeis.org/A123456">A123456</a></tt><br /></dd></dl> <ul><li> To add an anchor, first choose a unique name, say "watermelon".<br /></li> <li> Then change the entry so that it reads<br /></li></ul> <dl><dd> <tt><span id="watermelon">'''watermelon numbers:'''</span><br /></tt></dd> <dd> <tt>watermelon numbers: <a href="http://oeis.org/A123456">A123456</a></tt></dd></dl> <ul><li> Once you have saved the page, what you will see is:</li></ul> <dl><dd> <span id="watermelon"><b>watermelon numbers:</b></span><br /></dd> <dd> watermelon numbers: <a href="http://oeis.org/A123456">A123456</a><br /></dd></dl> <dl><dd> (The "span" line creates an invisible <a href="#watermelon">#watermelon</a> anchor point.)</dd></dl> <p><br /> </p> <h2><span class="mw-headline" id="Adding_a_link_from_the_Index_to_the_Index">Adding a link from the Index to the Index</span></h2> <ul><li> Here is an example:<br /></li></ul> <dl><dd> <tt>bracelets: see also [[Index_to_OEIS:_Section_Lu#Lyndon|Lyndon words]]</tt></dd></dl> <ul><li> To cross-reference the entry for watermelon numbers that you just created, you might say:<br /></li></ul> <dl><dd> <tt>fruit: see also [[Index_to_OEIS:_Section_Wa#watermelon|watermelon numbers]]</tt></dd></dl> <p><br /><br /> </p> <ul><li> It is a good idea to create lots of cross-references in the Index.</li> <li> If you add an entry for <b>Frank Sinatra graphs</b> (say), then you should make sure that there are links from other versions to the main entry.</li> <li> Which version you choose as the main entry is a matter of taste.</li> <li> In this case the main entry should be:</li></ul> <dl><dd> <tt>graphs, Frank Sinatra</tt></dd></dl> <p>but there should also be links to the main entry saying </p> <dl><dd> <tt>Frank Sinatra graphs: see graphs, Frank Sinatra</tt></dd> <dd> <tt>Sinatra, Frank, graphs: see graphs, Frank Sinatra</tt></dd> <dd> <tt>graphs, Sinatra: see graphs, Frank Sinatra</tt> </dd></dl> <p><br /><br /> </p> <h2><span class="mw-headline" id="Adding_a_new_Index_page">Adding a new Index page</span></h2> <ul><li><b>This should only be done by experts!</b><br /></li> <li> The list of Index pages is stored in the wiki file <a href="/wiki/Template:Index_Section_List" title="Template:Index Section List">Template:Index Section List</a></li></ul> <p><br /><br /> </p><p><br /> </p><p><br /> <br /> </p> <center><div style="width:80%; 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