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 A049701 #5 May 11 2007 03:00:00 %S A049701 0,2,4,8,14,24,36,54,76,104,136,178,224,282,346,418,498,594,696,816 %N A049701 Duplicate of A005598. %K A049701 dead %O A049701 0,2