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 A026515 #10 Oct 06 2019 07:57:04 %S A026515 1,1,3,3,1,1,7,1,3,3,1,7,1,1,3,3,1,1,7,1,6,1,8,1,3,3,1,1,7,1,3,3,1,7, %T A026515 1,1,3,3,1,8,1,6,1,7,1,1,3,3,1,1,7,1,3,3,1,7,1,1,3,3,1,1,7,1,6,1,8,1, %U A026515 3,3,1,1,7,1,6,1,7,1,1,3,3,1,8,1,6,1,8,1,3,3 %N A026515 a(n) = length of n-th run of identical symbols in A026513. %Y A026515 Cf. A001285, A026513. %K A026515 nonn %O A026515 1,3 %A A026515 _Clark Kimberling_ %E A026515 a(63) onward corrected by _Sean A. Irvine_, Oct 05 2019