OFFSET
0,3
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 0..440
MATHEMATICA
nmax=20; CoefficientList[Series[Product[(1+E^x*x^k), {k, 1, nmax}], {x, 0, nmax}], x] * Range[0, nmax]!
CROSSREFS
KEYWORD
nonn
AUTHOR
Vaclav Kotesovec, Dec 19 2015
STATUS
approved