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 A014554 #1 Dec 11 1999 03:00:00 %S A014554 2,4,5,7,8,11,13,16,17,19,37,41,47,53,61,71,79,113,313,353 %N A014554 Erroneous version of A001606. %K A014554 dead %O A014554 0,1