|
|
A022712
|
|
Expansion of Product_{m>=1} (1+m*q^m)^-20.
|
|
2
|
|
|
1, -20, 170, -800, 2415, -6404, 21550, -71080, 178295, -419200, 1203282, -3294360, 7476320, -17381780, 44919500, -107605880, 237628435, -544086720, 1273805460, -2864694880, 6256648862, -13710129840
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
MATHEMATICA
|
With[{nmax = 50}, CoefficientList[Series[Product[(1 + k*q^k)^-20, {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)^-20)) \\ G. C. Greubel, Jul 20 2018
|
|
CROSSREFS
|
|
|
KEYWORD
|
sign
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|