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 A063779 #4 Nov 10 2007 03:00:00 %S A063779 15,18,20,24,25,30,33,35,36,40,42,45,48,50,54,55,57,60,63,65,66,70,72, %T A063779 75,78,80,84,85,90,95,96,99,100,102,105,106,108,109,110,114,115,118, %U A063779 120,125,126,128,129,130,132,133,134,135,137,138,139,140,141,142,143 %N A063779 Duplicate of A063781. %K A063779 dead %O A063779 1,1