OFFSET
0,4
LINKS
Winston de Greef, Table of n, a(n) for n = 0..441
Eric Weisstein's World of Mathematics, Lambert W-Function.
FORMULA
a(n) = n! * [x^n] exp(x + n*x^3/6).
E.g.f.: exp( ( -2*LambertW(-x^3/2) )^(1/3) ) / (1 + LambertW(-x^3/2)).
PROG
(PARI) my(N=30, x='x+O('x^N)); Vec(serlaplace(exp((-2*lambertw(-x^3/2))^(1/3))/(1+lambertw(-x^3/2))))
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Apr 14 2023
STATUS
approved