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 A129354 #13 Feb 12 2023 14:22:51 %S A129354 1,3,2,6,2,6,2,10,3,6,2,12,2,6,4,15,2,9,2,12,4,6,2,20,3,6,4,12,2,12,2, %T A129354 21,4,6,4,18,2,6,4,20,2,12,2,12,6,6,2,30,3,9,4,12,2,12,4,20,4,6,2,24, %U A129354 2,6,6,28,4,12,2,12,4 %N A129354 Duplicate of A129628. %K A129354 dead %O A129354 1,2