OFFSET
0,3
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..167
FORMULA
a(n) = n! * [x^n] 1/(1 - n + exp(x) + exp(2*x) + exp(3*x) + ... + exp(n*x)).
MATHEMATICA
Table[n! SeriesCoefficient[1/(1 - n + Exp[x] (Exp[n x] - 1)/(Exp[x] - 1)), {x, 0, n}], {n, 0, 13}]
PROG
(PARI) default(seriesprecision, 101); {a(n) = n!*polcoeff((1/(1-n+exp(x)*(exp(n*x)-1)/(exp(x)-1)) + O(x^(n+1))), n)};
for(n=0, 25, print1(a(n), ", ")) \\ G. C. Greubel, Oct 09 2018
CROSSREFS
KEYWORD
sign
AUTHOR
Ilya Gutkovskiy, Sep 21 2018
STATUS
approved