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 A049624 #1 Dec 11 1999 03:00:00 %S A049624 1,1,3,4,6,7,9,10,12,13,15,16,18,19,21,22,24,25,27,28,30,31,33,34,36 %N A049624 Essentially the same as A032766. %K A049624 dead %O A049624 0,3