This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A010862 #27 Aug 18 2018 21:30:02 %S A010862 23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23, %T A010862 23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23, %U A010862 23,23,23,23,23,23,23,23 %N A010862 Constant sequence: a(n) = 23. %H A010862 Tanya Khovanova, <a href="http://www.tanyakhovanova.com/RecursiveSequences/RecursiveSequences.html">Recursive Sequences</a> %H A010862 <a href="/index/Di#divseq">Index to divisibility sequences</a> %H A010862 <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (1). %F A010862 G.f.: 23/(1-x). - _Vincenzo Librandi_, Jan 16 2012 %K A010862 nonn,easy %O A010862 0,1 %A A010862 _N. J. A. Sloane_