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 A115875 #2 Mar 31 2012 13:21:10 %S A115875 0,111,1110,11100,11111,111000,111110,111111,1110000,1110111,1111100, %T A115875 1111110,1111111,11100000,11101110,11111000,11111100,11111110, %U A115875 11111111,111000000,111000111,111011100,111110000,111111000,111111100 %N A115875 Sequence A115874 in binary. %Y A115875 a(n) = A007088(A115874(n)). %K A115875 nonn,base %O A115875 0,2 %A A115875 _Antti Karttunen_, Feb 07 2006