OFFSET
0,3
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..533
FORMULA
a(n) ~ 3^(2*n/3 - 1/2) * n^(2*n/3) * exp(-76/729 + 19*3^(1/3)*n^(1/3)/81 + 2*3^(2/3)*n^(2/3)/9 - 2*n/3). - Vaclav Kotesovec, Oct 15 2017
MATHEMATICA
CoefficientList[Series[E^(x+2*x^2+3*x^3), {x, 0, 20}], x] * Range[0, 20]! (* Vaclav Kotesovec, Oct 15 2017 *)
PROG
(PARI) N=66; x='x+O('x^N); Vec(serlaplace(exp(x+2*x^2+3*x^3)))
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Oct 15 2017
STATUS
approved