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 A280366 #14 Jan 02 2017 10:57:50 %S A280366 1,2,2,4,6,6,10,14,14,20,28,30,38,50,54,66,86,94,110,138,152,178,218, %T A280366 238,274,330,362,412,488,534,602,710,778,864,1006,1102,1220,1410,1542, %U A280366 1696,1940,2122,2328,2638,2878,3148,3550,3870,4214,4722,5136,5580,6230 %N A280366 G.f.: Product_{k>=1} (1 + x^(k*(k+1)/2)) / (1 - x^(k*(k+1)/2)). %C A280366 Convolution of A024940 and A007294. %H A280366 Vaclav Kotesovec, <a href="/A280366/b280366.txt">Table of n, a(n) for n = 0..10000</a> %F A280366 a(n) ~ exp(3 * 2^(-4/3) * Pi^(1/3) * ((2*sqrt(2)-1) * Zeta(3/2))^(2/3) * n^(1/3)) * Zeta(3/2) * (2*sqrt(2)-1) / (32 * sqrt(3) * Pi * n^(3/2)). %t A280366 nmax = 60; CoefficientList[Series[Product[(1+x^(k*(k+1)/2))/(1-x^(k*(k+1)/2)), {k, 1, nmax}], {x, 0, nmax}], x] %Y A280366 Cf. A024940, A007294, A103265. %K A280366 nonn %O A280366 0,2 %A A280366 _Vaclav Kotesovec_, Jan 02 2017