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 A004792 #6 Feb 20 2005 03:00:00 %S A004792 1,2,4,5,10,11,13,14,29,30,32,33,38,39,41,42,85,86,88,89,94,95,97,98, %T A004792 112,113,115,116,121,122,124,125,251,252,254,255,260,261,263,264 %N A004792 Erroneous version of A003278. %K A004792 dead %O A004792 1,2