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 A115773 #2 Mar 31 2012 13:21:10 %S A115773 0,101,1010,1111,10100,10101,11110,11111,101000,101010,101101,101111, %T A115773 111100,111101,111110,111111,1010000,1010100,1010101,1011010,1011110, %U A115773 1011111,1111000,1111010,1111100,1111101,1111110,1111111,10100000 %N A115773 Sequence A115772 in binary. %Y A115773 Cf. a(n) = A007088(A115772(n)). %K A115773 nonn,base %O A115773 0,2 %A A115773 _Antti Karttunen_, Jan 30 2006