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 A220695 #4 Dec 18 2012 15:37:34 %S A220695 1,3,4,9,10,11,12,13,14,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47, %T A220695 48,49,50,51,52,53,54,55,56,153,154,155,156,157,158,159,160,161,162, %U A220695 163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178 %N A220695 Complement of A220655. %H A220695 Antti Karttunen, <a href="/A220695/b220695.txt">Table of n, a(n) for n = 1..5913</a> %Y A220695 Cf. A220696. %K A220695 nonn %O A220695 1,2 %A A220695 _Antti Karttunen_, Dec 17 2012