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 A066095 #4 May 11 2007 03:00:00 %S A066095 1,4,6,9,12,14,17,19,22,25,27,30,33,35,38,40,43,46,48,51,53,56,59,61 %N A066095 Duplicate of A003622. %K A066095 dead %O A066095 0,2