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%I #9 Sep 08 2022 08:44:46
%S 1,13,117,832,5109,28054,141401,664287,2943460,12404535,50050910,
%T 194348193,729316796,2654041235,9393084103,32409549367,109246771179,
%U 360409934599,1165521592456,3699803142334
%N Expansion of Product_{m>=1} (1-m*q^m)^-13.
%H G. C. Greubel, <a href="/A022737/b022737.txt">Table of n, a(n) for n = 0..1000</a>
%t With[{nmax = 50}, CoefficientList[Series[Product[(1 - k*q^k)^-13, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 25 2018 *)
%o (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1-n*q^n)^-13)) \\ _G. C. Greubel_, Jul 25 2018
%o (Magma) n:=50; R<x>:=PowerSeriesRing(Integers(), n); Coefficients(R!(&*[(1/(1-m*x^m))^13:m in [1..n]])); // _G. C. Greubel_, Jul 25 2018
%K nonn
%O 0,2
%A _N. J. A. Sloane_
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