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 A168453 #4 May 18 2022 11:39:32 %S A168453 2,5,11,11,7224839,10780559,10780559 %N A168453 Erroneous version of A093554. %K A168453 dead %O A168453 1,1