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 A077276 #4 May 11 2007 03:00:00 %S A077276 2,3,5,3,5,3,3,7,9,5,9,7,3,7,5,3,3,3,5,3,3,3,5,5,57,25,49,3,9,5,11,3,5 %N A077276 Duplicate of A073684. %K A077276 dead %O A077276 1,1