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 A098674 #3 May 11 2007 03:00:00 %S A098674 211,617,1499,2087,2857,6007,6469,7127,7211,7589,9661,10193,13259 %N A098674 Duplicate of A056212. %K A098674 dead %O A098674 1,1