OFFSET
1,2
LINKS
Vaclav Kotesovec, Table of n, a(n) for n = 1..380
FORMULA
a(n) ~ n^n. - Vaclav Kotesovec, May 30 2019
EXAMPLE
L.g.f.: A(x) = x + 3*x^2/2 + 22*x^3/3 + 219*x^4/4 + 2771*x^5/5 +...
exp(A(x)) = 1 + x + 2*x^2 + 9*x^3 + 64*x^4 + 625*x^5 + 7776*x^6 +...
PROG
(PARI) {a(n)=polcoeff(x*deriv(log(Ser(concat(1, vector(n+1, k, k^(k-1)))))), n)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Jun 11 2008
STATUS
approved