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 A104667 #2 Mar 30 2012 17:26:11 %S A104667 1,25,39,6,5,4,24,10,7,2,3,29,8,11,12,44,15,35,18,20,14,9,51,26,42,13, %T A104667 22,19 %N A104667 Position of n in A105835. %Y A104667 Cf. A105835. %K A104667 nonn %O A104667 1,2 %A A104667 _Zak Seidov_, Apr 22 2005