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A299167 Expansion of 1/(1 - x*Product_{k>=1} (1 + x^k)^k). 10

%I #4 Feb 04 2018 12:38:21

%S 1,1,2,5,14,36,94,243,628,1619,4178,10776,27793,71682,184879,476832,

%T 1229830,3171942,8180989,21100215,54421187,140361900,362018270,

%U 933709453,2408202606,6211182512,16019743522,41317765457,106565859669,274852289679,708892898170,1828360759013,4715667307920

%N Expansion of 1/(1 - x*Product_{k>=1} (1 + x^k)^k).

%H N. J. A. Sloane, <a href="/transforms.txt">Transforms</a>

%F G.f.: 1/(1 - x*Product_{k>=1} (1 + x^k)^k).

%F a(0) = 1; a(n) = Sum_{k=1..n} A026007(k-1)*a(n-k).

%t nmax = 32; CoefficientList[Series[1/(1 - x Product[(1 + x^k)^k, {k, 1, nmax}]), {x, 0, nmax}], x]

%Y Antidiagonal sums of A277938.

%Y Cf. A026007, A067687, A299105, A299106, A299108, A299162, A299164, A299166.

%K nonn

%O 0,3

%A _Ilya Gutkovskiy_, Feb 04 2018

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Last modified April 18 04:56 EDT 2024. Contains 371767 sequences. (Running on oeis4.)