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 A102511 #3 Mar 30 2012 18:50:48 %S A102511 1,0,1,1,0,1,0,0,0,1,0,0,1,0,1,1,0,0,1,1,0,1,0,0,0,1,1,1,0,1,0,0,1,0, %T A102511 1,1,0,1,0,0,1,0,1,1,1,0,1,1,1,1,0,0,1,1,0,0,1,0,1,1,0,1,1,1,0,1,0,0, %U A102511 1,0,1,1,0,1,1,1,0,1,0,0,0,1,0,0,1,0,1,1,0,0,1,1,0,1,0,0,1,1,1,1,0,1,0,0,1 %N A102511 Sum(A008683(A102510(k)): k<=n). %C A102511 0 <= a(n) <= 1, compare with A002321 %K A102511 nonn %O A102511 1,1 %A A102511 _Reinhard Zumkeller_, Jan 13 2005