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 A115812 #2 Mar 31 2012 13:21:10 %S A115812 1111,11110,111100,1111000,11110000,111100000,1111000000,11110000000, %T A115812 111100000000,111100001111,1111000000000,1111000001111,1111000011110, %U A115812 1111000011111,1111100001111,11110000000000,11110000001111 %N A115812 Sequence A115811 in binary. %Y A115812 Cf. a(n) = A007088(A115811(n)). %K A115812 nonn,base %O A115812 1,1 %A A115812 _Antti Karttunen_, Feb 01 2006