a(n) = Sum_{d|n} (n/d)^n * binomial(d+n,n).
A363662
a(n) = Sum_{d|n} (n/d)^n * binomial(d+n,n).
Terms
- a(0) =2a(1) =18a(2) =128a(3) =1590a(4) =19002a(5) =353304a(6) =6591776a(7) =154083654a(8) =3878583770a(9) =110647791078
External references
- oeis: A363662