OFFSET
0,3
FORMULA
E.g.f.: exp(Sum_{k>=1} Sum_{j>=1} (-1)^(k+1)*j^(k-1)*x^(j*k)/k). - Ilya Gutkovskiy, May 28 2018
PROG
(PARI) N=66; x='x+O('x^N); Vec(serlaplace(prod(k=1, N, (1+k*x^k)^(1/k))))
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Oct 31 2017
STATUS
approved