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 A075392 #3 Jan 09 2009 03:00:00 %S A075392 1,3,2,2,3,3,2,2,3,5,2,2,7,3,2,2,3,3,2,2,3,11,2,2,5,3,2,2,3,3,2,2,3,5, %T A075392 2 %N A075392 Duplicate of A069901. %K A075392 dead %O A075392 1,2