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 A206000 #14 Oct 20 2014 17:15:13 %S A206000 1,0,0,1,2,6,15,40,110,303,853,2419,6950,20110,58677,172267,508825, %T A206000 1510472,4504978,13491155,40554394,122318519,370075767,1122830663, %U A206000 3415591776,10414918850,31827804005,97464863424,299032201886,919094334980,2829593105751,8724968220133,26942517476931,83312297368383 %N A206000 Inverse Euler transform of 2 - A195981. %C A206000 The sequence is conjectured to be nonnegative and convex. %H A206000 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %H A206000 A. D. Sokal, <a href="http://arxiv.org/abs/1106.1003">The leading root of the partial theta function</a>, arXiv preprint arXiv:1106.1003, 2011. Adv. Math. 229 (2012), no. 5, 2603-2621. %Y A206000 Cf. A195980, A195981, A205999. %K A206000 nonn %O A206000 0,5 %A A206000 _N. J. A. Sloane_, Feb 02 2012, Feb 03 2012