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A022674 Expansion of Product_{m >= 1} (1-m*q^m)^14. 2
1, -14, 63, -14, -651, 1162, 2198, -3432, -12320, -7098, 87479, 45024, -185038, -348250, -435473, 1642942, 2806839, 1366078, -7970459, -25275068, -631813, 38994650, 112439376, 112528514, -136016069, -535046498 (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)^14, {k, 1, nmax}], {q, 0, nmax}], q]] (* G. C. Greubel, Jul 18 2018 *)

PROG

(PARI) m=50; q='q+O('q^m); Vec(prod(n=1, m, (1-n*q^n)^14)) \\ G. C. Greubel, Jul 18 2018

(MAGMA) Coefficients(&*[(1-m*x^m)^14:m in [1..40]])[1..40] where x is PolynomialRing(Integers()).1; // G. C. Greubel, Jul 18 2018

CROSSREFS

Sequence in context: A307253 A125849 A003695 * A044152 A044533 A050492

Adjacent sequences:  A022671 A022672 A022673 * A022675 A022676 A022677

KEYWORD

sign

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified January 24 00:05 EST 2022. Contains 350515 sequences. (Running on oeis4.)