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 A077574 #5 May 11 2007 03:00:00 %S A077574 0,3,0,6,2,6,16,18,22,28,15,3,5,21,46,13,58,60,33,35,8,13,41,44,96,4, %T A077574 34 %N A077574 Duplicate of A071126. %K A077574 dead %O A077574 1,2