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 A100687 #8 Jul 17 2021 07:53:15 %S A100687 1,2,2,2,2,18,48,46,80,130,74,120,118,136,174,132,168,198,190,130,176, %T A100687 234,358,102,354,364,336,324,486,442 %N A100687 Erroneous duplicate of A058044. %K A100687 dead %O A100687 1,2