|
%I #10 Sep 08 2022 08:44:46
%S 1,-28,322,-1792,3059,18788,-109970,96232,739669,-1676136,-2594074,
%T 6667864,22486226,-26768980,-188468912,174822312,845108712,-60897844,
%U -3216451658,-5497042096,11876402839,31175102772
%N Expansion of Product_{m>=1} (1-m*q^m)^28.
%H G. C. Greubel, <a href="/A022688/b022688.txt">Table of n, a(n) for n = 0..1000</a>
%t With[{nmax = 50}, CoefficientList[Series[Product[(1 - k*q^k)^28, {k, 1, nmax}], {q, 0, nmax}], q]] (* _G. C. Greubel_, Jul 19 2018 *)
%o (PARI) m=50; q='q+O('q^m); Vec(prod(n=1,m,(1-n*q^n)^28)) \\ _G. C. Greubel_, Jul 19 2018
%o (Magma) Coefficients(&*[(1-m*x^m)^28:m in [1..40]])[1..40] where x is PolynomialRing(Integers()).1; // _G. C. Greubel_, Jul 19 2018
%K sign
%O 0,2
%A _N. J. A. Sloane_
|
