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 A130854 #4 Mar 31 2012 14:40:00 %S A130854 0,1,1,1,0,1,0,1,1,1,1,0,1,0,1,1,1,1,1,0,1,1,1,1,1,1,1,1,1,0,1,1,0,1, %T A130854 1,1,1,1,1,0,1,1,1,1,1,0,1,1,1,0,1,1,1,1,1,0,1,1,1,1,1,1,1,1,0,1,1,1, %U A130854 1,1,1,1,1,1,0,1,1,1,1,1,1,1,0,1,1,1,1,1,1,1,1,1,0,1,1,1,0,1,1,0,1,1,1,0,1 %N A130854 Runs of 1's of lengths 1 for decimal expansion of Pi (A000796), separated by 0's. %Y A130854 Cf. A093521. %K A130854 nonn,easy,base %O A130854 1,1 %A A130854 _Jani Melik_, Jul 21 2007