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 A080184 #4 May 11 2007 03:00:00 %S A080184 2,3,5,3,7,3,11,13,5,17,19,7,23,17,29,5,31,23,3,37,41,43,47,11,17,53 %N A080184 Duplicate of A052248. %K A080184 dead %O A080184 2,1