a(n) = Sum_{d|n} d^n * binomial(d, n/d).
A338685
a(n) = Sum_{d|n} d^n * binomial(d, n/d).
Terms
- a(0) =1a(1) =8a(2) =81a(3) =1040a(4) =15625a(5) =282123a(6) =5764801a(7) =134610944a(8) =3486804084a(9) =100097656250
External references
- oeis: A338685
A338685
a(n) = Sum_{d|n} d^n * binomial(d, n/d).