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 A079493 #4 May 11 2007 03:00:00 %S A079493 367,373,379,397,409,439,457,499,523,577,607,673,709,787,829,919,967 %N A079493 Duplicate of A080020. %K A079493 dead %O A079493 1,1