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 A122243 #2 Mar 31 2012 13:21:11 %S A122243 101010,11110000,1110010100,111010100100,11101001110000, %T A122243 1111001010011000,111100100101110000,11101100101001011000, %U A122243 1110110010011011100000,111100111001000110110000 %N A122243 a(n) = A007088(A122242(n)). %Y A122243 A080070, A122230, A122233, A122236, A122240, A122246. %K A122243 nonn,base %O A122243 1,1 %A A122243 _Antti Karttunen_, Sep 14 2006