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 A095251 #4 Jun 29 2008 03:00:00 %S A095251 23,25,27,29,34,35,37,38,43,45,46,47,49,51,52,53,56,57,58,59,67,68,69 %N A095251 Erroneous version of A038772. %K A095251 dead %O A095251 1,1