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 A085472 #12 Feb 18 2023 08:27:44 %S A085472 1,1,1,1,2,1,2,3,3,2,2,5,5,5,2,3,7,9,9,7,3,4,10,14,17,14,10,4,5,14,21 %N A085472 Duplicate of A054242. %K A085472 dead %O A085472 0,5