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 A079855 #4 May 11 2007 03:00:00 %S A079855 2,6,10,30,42,60,210,330,390,420,2310,2730,3570,3990,4290,30030,39270 %N A079855 Duplicate of A048692. %K A079855 dead %O A079855 1,1