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A022715 Expansion of Product_{m>=1} (1+m*q^m)^-23. 2

%I

%S 1,-23,230,-1311,4853,-14191,44873,-154859,454043,-1139765,3085358,

%T -8930785,22848752,-53971892,137067350,-351827803,829356379,

%U -1915368585,4586707633,-10818772384,24533286122,-55227022631

%N Expansion of Product_{m>=1} (1+m*q^m)^-23.

%H G. C. Greubel, <a href="/A022715/b022715.txt">Table of n, a(n) for n = 0..1000</a>

%t With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-23, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 20 2018 *)

%o (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1+n*q^n)^-23)) \\ _G. C. Greubel_, Jul 20 2018

%K sign

%O 0,2

%A _N. J. A. Sloane_

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Last modified October 1 12:39 EDT 2022. Contains 357147 sequences. (Running on oeis4.)