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 A104818 #7 Oct 05 2013 08:46:32 %S A104818 13,3,1,4,2,9,15,153,556,17 %N A104818 First occurrence of n in partition of decimal expansion of Pi A104807. %Y A104818 Cf. A104807-A104817. %K A104818 full,nonn,base,fini %O A104818 1,1 %A A104818 _Zak Seidov_, Mar 27 2005