OFFSET
1,2
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..386
FORMULA
Logarithmic derivative of A174463.
a(n) ~ n^n. - Vaclav Kotesovec, Oct 05 2020
MATHEMATICA
Table[Sum[Binomial[n, d]^(n/d), {d, Divisors[n]}], {n, 1, 20}] (* Vaclav Kotesovec, Oct 05 2020 *)
PROG
(PARI) {a(n)=sumdiv(n, d, binomial(n, d)^(n/d))}
CROSSREFS
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 04 2010
STATUS
approved