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 A222808 #23 Jul 23 2013 08:16:16
%S A222808 0,0,0,2,8,24,62,150,338,738,1568,3282,6780,13904,28288,57342,115812,
%T A222808 233426,469656,944000,1895194,3802762,7625328,15284798,30626642,
%U A222808 61353084,122872144,246042562,492592948,986089652,1973756116,3950330140,7905541650,15819942048,31655323370
%N A222808 Number of subsets A of {0,1,...,n-1} with |A+A| < |A-A|.
%C A222808 Some authors work with subsets of [0..n-1], others with subsets of [1..n].
%C A222808 Keywords: sum-dominant sets, MSTD sets.
%C A222808 a(1)-a(21) were computed by Daniel C. R. Scheinerman, Mar 10 2013; although a(1)-a(27) had been found by Kevin O'Bryant some time earlier.
%H A222808 James Wilcox and Giovanni Resta, <a href="/A222808/b222808.txt">Table of n, a(n) for n = 1..40</a> (first 35 terms from James Wilcox)
%H A222808 Greg Martin and Kevin O'Bryant, <a href="http://arxiv.org/abs/math/0608131">Many sets have more sums than differences</a>, arXiv:math/0608131 [math.NT], 2006.
%Y A222808 Cf. A118544, A140794, A222807.
%K A222808 nonn
%O A222808 1,4
%A A222808 _N. J. A. Sloane_, Mar 10 2013
%E A222808 a(28)-a(35) from _James Wilcox_, Jul 22 2013