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A327068 Expansion of Product_{k>=1} (Product_{j=1..k} 1/(1 - x^(k*j))^(k*j)). 4

%I #7 Aug 21 2019 15:49:31

%S 1,1,3,6,17,28,66,116,248,441,867,1516,2894,5015,9138,15724,27954,

%T 47428,82421,138380,235910,392040,657590,1081225,1789550,2914500,

%U 4763562,7689071,12433581,19897139,31862226,50583981,80285138,126509709,199167763,311620226

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

%H Vaclav Kotesovec, <a href="/A327068/b327068.txt">Table of n, a(n) for n = 0..10000</a>

%t nmax = 40; CoefficientList[Series[Product[Product[1/(1-x^(k*j))^(k*j), {j, 1, Min[k, nmax/k]}], {k, 1, nmax}], {x, 0, nmax}], x]

%Y Cf. A000294, A061256, A182269, A279216, A280540, A327065, A327066, A327067.

%K nonn

%O 0,3

%A _Vaclav Kotesovec_, Aug 19 2019

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Last modified May 3 01:16 EDT 2024. Contains 372203 sequences. (Running on oeis4.)