a(n) = Sum_{k=0..n} k^k * binomial(n,k)^n, with a(0)=1.
A336213
a(n) = Sum_{k=0..n} k^k * binomial(n,k)^n, with a(0)=1.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =163a(4) =12609a(5) =3906251a(6) =4835455813
External references
- oeis: A336213
A336213
a(n) = Sum_{k=0..n} k^k * binomial(n,k)^n, with a(0)=1.