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 A030576 #6 Mar 30 2012 18:56:18 %S A030576 1,3,1,1,1,1,1,1,1,1,2,1,1,1,1,1,5,2,2,2,2,2,1,1,1,1,1,2,1,1,1,1,1,2, %T A030576 1,1,1,1,1,2,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1,1,1, %U A030576 1,2,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1 %N A030576 Length of n-th run of digit 1 in A030567. %K A030576 nonn,base %O A030576 1,2 %A A030576 _Clark Kimberling_