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 A047914 #2 Feb 24 2006 03:00:00 %S A047914 1,5,8,7,4,0,1,0,5,1,9,6,8,1,9,9,4,7,4,7,5,1,7,0,5,6,3,9,2,7,2,3,0,8, %T A047914 2,6 %N A047914 Duplicate of A005480. %K A047914 dead %O A047914 1,2