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 A165338 #10 Oct 13 2018 12:41:04 %S A165338 16,22,61,79,97,106,115,127,151,160,172,202,217,220 %N A165338 Duplicate of A154877. %K A165338 dead %O A165338 1,1