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 A072991 #1 May 16 2003 03:00:00 %S A072991 8,5,4,9,1,7,6,10,3,2 %N A072991 Numbers 1 through 10 in alphabetical order. %Y A072991 A000052 is a better version of this sequence. %K A072991 easy,nonn,word,fini,full %O A072991 1,1 %A A072991 Brian Nichols (brni(AT)weinberggroup.com), Aug 21 2002