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 A115802 #2 Mar 31 2012 13:21:10 %S A115802 0,1111,11110,11111,111100,111110,111111,1111000,1111100,1111110, %T A115802 1111111,11110000,11111000,11111100,11111110,11111111,111100000, %U A115802 111110000,111111000,111111100,111111110,111111111,1111000000 %N A115802 Sequence A115801 in binary. %Y A115802 Cf. a(n) = A007088(A115801(n)). %K A115802 nonn,base %O A115802 0,2 %A A115802 _Antti Karttunen_, Feb 01 2006