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A022715 Expansion of Product_{m>=1} (1+m*q^m)^-23. 2
1, -23, 230, -1311, 4853, -14191, 44873, -154859, 454043, -1139765, 3085358, -8930785, 22848752, -53971892, 137067350, -351827803, 829356379, -1915368585, 4586707633, -10818772384, 24533286122, -55227022631 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

G. C. Greubel, Table of n, a(n) for n = 0..1000

MATHEMATICA

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

PROG

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

CROSSREFS

Sequence in context: A144248 A124336 A010829 * A060189 A028824 A096983

Adjacent sequences:  A022712 A022713 A022714 * A022716 A022717 A022718

KEYWORD

sign

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified August 8 14:59 EDT 2022. Contains 356009 sequences. (Running on oeis4.)