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 A078697 #4 May 11 2007 03:00:00 %S A078697 1,2,5,8,15,24,41,66,109,176,287,464,753,1218,1973,3192,5167,8360, %T A078697 13529 %N A078697 Duplicate of A066629. %K A078697 dead %O A078697 0,2