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Expansion of Product_{k>=1} (Product_{j=1..k} 1/(1 - x^(k*j))^k).
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%I #7 Aug 21 2019 15:49:01

%S 1,1,3,6,15,26,57,101,202,358,670,1165,2113,3614,6326,10691,18275,

%T 30408,50969,83716,137943,223883,363547,583369,935524,1485673,2355496,

%U 3705275,5815497,9066696,14100325,21802824,33622951,51592978,78949673,120278899,182742752

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

%H Vaclav Kotesovec, <a href="/A327067/b327067.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, 1, Min[k, nmax/k]}], {k, 1, nmax}], {x, 0, nmax}], x]

%Y Cf. A000294, A061256, A182269, A279216, A280540, A327064, A327066, A327068.

%K nonn

%O 0,3

%A _Vaclav Kotesovec_, Aug 19 2019