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 A043535 #9 Apr 24 2021 21:25:51 %S A043535 1,1,1,1,1,1,1,2,1,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2, %T A043535 2,1,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,1,2,2,2,2,2,2,2,2,1,2,2,3,3,3, %U A043535 3,3,3,2,1,2,2,2,2,2,2,3,2,2,3,3,3,3,3,3,2,3 %N A043535 Number of distinct base-8 digits of n. %Y A043535 Cf. A007094. %K A043535 nonn,base %O A043535 1,8 %A A043535 _Clark Kimberling_