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 A044941 #30 Jan 09 2023 07:41:31 %S A044941 0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0, %T A044941 0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0, %U A044941 0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,1,0,0 %N A044941 Number of runs of even length in base-10 representation of n. %H A044941 Alois P. Heinz, <a href="/A044941/b044941.txt">Table of n, a(n) for n = 1..65536</a> %Y A044941 Cf. A153435 (n where new high). %K A044941 nonn,easy,base %O A044941 1,1100 %A A044941 _Clark Kimberling_ %E A044941 Incorrect formulas and programs (as pointed out by _Kevin Ryde_) removed by _Joerg Arndt_, Nov 08 2020