OFFSET
0,3
LINKS
N. J. A. Sloane, Transforms
FORMULA
a(n) = Sum_{k=0..n} binomial(n,k)*(n*k)^(n-k).
MATHEMATICA
Table[n! SeriesCoefficient[Exp[x Exp[n x]], {x, 0, n}], {n, 0, 18}]
Join[{1}, Table[Sum[Binomial[n, k] (n k)^(n - k), {k, 0, n}], {n, 1, 18}]]
CROSSREFS
KEYWORD
nonn
AUTHOR
Ilya Gutkovskiy, Nov 23 2017
STATUS
approved