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 A288816 #19 Jul 02 2017 16:40:18
%S A288816 1,24,648,17376,466152,12505104,335466144,8999325120,241418862504,
%T A288816 6476381979576,173737557697968,4660740989265312,125030574027131424,
%U A288816 3354111390776151504,89978497733627940672,2413792838444465745216,64753202305891291798824
%N A288816 Coefficients in expansion of 1/E_2.
%H A288816 Seiichi Manyama, <a href="/A288816/b288816.txt">Table of n, a(n) for n = 0..700</a>
%F A288816 G.f.: 1/(1 - 24*sum(k>=1, k*x^k/(1 - x^k))).
%F A288816 a(n) ~ c / r^n, where r = A211342 = 0.037276810296451658150980785651644618... is the root of the equation Sum_{k>=1} A000203(k) * r^k = 1/24 and c = 0.900080074462078245744608120875628441926356101483729... - _Vaclav Kotesovec_, Jul 02 2017
%Y A288816 Cf. A006352 (E_2).
%Y A288816 Cf. this sequence (k=2), A001943 (k=4), A000706 (k=6), A287933 (k=8), A285836 (k=10), A287964 (k=14).
%K A288816 nonn
%O A288816 0,2
%A A288816 _Seiichi Manyama_, Jun 17 2017