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<script>(window.RLQ=window.RLQ||[]).push(function(){mw.config.set({"wgCanonicalNamespace":"Special","wgCanonicalSpecialPageName":"Userlogin","wgNamespaceNumber":-1,"wgPageName":"Special:UserLogin","wgTitle":"UserLogin","wgCurRevisionId":0,"wgRevisionId":0,"wgArticleId":0,"wgIsArticle":false,"wgIsRedirect":false,"wgAction":"view","wgUserName":null,"wgUserGroups":["*"],"wgCategories":[],"wgBreakFrames":true,"wgPageContentLanguage":"en","wgPageContentModel":"wikitext","wgSeparatorTransformTable":["",""],"wgDigitTransformTable":["",""],"wgDefaultDateFormat":"dmy","wgMonthNames":["","January","February","March","April","May","June","July","August","September","October","November","December"],"wgMonthNamesShort":["","Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"],"wgRelevantPageName":"Special:UserLogin","wgRelevantArticleId":0,"wgRequestId":"56c07789603a23d998798187","wgIsProbablyEditable":false,"wgRelevantPageIsProbablyEditable":false,"wgFlaggedRevsParams":{"tags":{"style":{"levels":2,"quality":2,"pristine":4}}},"wgStableRevisionId":null});mw.loader.state({"user.options":"loading","user.tokens":"loading","mediawiki.ui.input":"ready","mediawiki.ui.radio":"ready","mediawiki.ui.checkbox":"ready","mediawiki.ui":"ready","mediawiki.ui.button":"ready","mediawiki.special.userlogin.common.styles":"ready","mediawiki.special.userlogin.login.styles":"ready","mediawiki.htmlform.styles":"ready","mediawiki.legacy.shared":"ready","mediawiki.legacy.commonPrint":"ready","mediawiki.sectionAnchor":"ready","mediawiki.skinning.interface":"ready","mediawiki.skinning.content.externallinks":"ready","skins.monobook.styles":"ready"});mw.loader.implement("user.options@0bhc5ha",function($,jQuery,require,module){mw.user.options.set([]);});mw.loader.implement("user.tokens@0jlvv7z",function 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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">Log in</h1> <div id="bodyContent" class="mw-body-content"> <div id="siteSub">From OeisWiki</div> <div id="contentSub"></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"><div class="mw-ui-container"><div id="userloginprompt"></div><div id="userloginForm"><form class="mw-htmlform mw-ui-vform mw-ui-container" action="/w/index.php?title=Special:UserLogin&returnto=Special:UserLogin" method="post" name="userlogin"><div> <div class="mw-htmlform-field-HTMLInfoField mw-ui-vform-field"><div class="mw-input mw-htmlform-nolabel"><p>To obtain a user account, you must <b><a href="/wiki/Special:RequestAccount" title="Special:RequestAccount">request one</a></b>. </p> </div></div><div class="mw-htmlform-field-HTMLTextField 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class="printfooter"> Retrieved from "<a dir="ltr" href="https://oeis.org/wiki/Special:UserLogin">https://oeis.org/wiki/Special:UserLogin</a>"</div> <div id="catlinks" class="catlinks catlinks-allhidden" data-mw="interface"></div>  <div class="visualClear"></div> </div> </div> </div> <div id="column-one"> <h2>Navigation menu</h2> <div id="p-cactions" class="portlet" role="navigation"> <h3>Views</h3> <div class="pBody"> <ul> <li id="ca-nstab-special" class="selected"><a href="/w/index.php?title=Special:UserLogin&returnto=Special%3AUserLogin" title="This is a special page, and it cannot be edited">Special page</a></li> </ul> </div> </div> <div class="portlet" id="p-personal" role="navigation"> <h3>Personal tools</h3> <div class="pBody"> <ul> <li id="pt-login" class="active"><a href="/w/index.php?title=Special:UserLogin&returnto=Special%3AUserLogin" title="You are encouraged to log in; however, it is not mandatory [o]" accesskey="o">Log in</a></li> <li id="pt-createaccount"><a 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