OFFSET
0,2
COMMENTS
See A088956 for the definition of the hyperbinomial transform.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..150
FORMULA
E.g.f.: exp(x) * (-LambertW(-x)/x)^4.
a(n) = Sum_{j=0..n} 4 * (n-j+4)^(n-j-1) * C(n,j).
Hyperbinomial transform of A089464.
a(n) ~ 4*exp(4+exp(-1))*n^(n-1). - Vaclav Kotesovec, Aug 16 2013
MAPLE
a:= n-> add(4*(n-j+4)^(n-j-1)*binomial(n, j), j=0..n):
seq (a(n), n=0..20);
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Oct 30 2012
STATUS
approved