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 A030613 #10 Apr 05 2020 02:11:07 %S A030613 2,1,1,1,1,1,1,2,2,1,2,1,1,1,1,1,1,2,1,1,1,1,3,1,1,1,1,1,1,1,1,1,1,1, %T A030613 1,1,1,1,3,1,1,2,2,1,1,1,1,2,1,1,1,1,2,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1, %U A030613 2,1,1,1,1,1,1,1,1,1,1,1,1,1,2,1,1,1,1,1,1,1 %N A030613 Length of n-th run of digit 1 in A030604. %K A030613 nonn,base %O A030613 1,1 %A A030613 _Clark Kimberling_ %E A030613 Title corrected and a(1) corrected for consistency with change in A030604 by _Sean A. Irvine_, Apr 04 2020