G.f.: exp( Sum_{n>=1} [Sum_{k>=1} k^n*x^k]^n/n ), a power series in x with integer coefficients.
A156170
G.f.: exp( Sum_{n>=1} [Sum_{k>=1} k^n*x^k]^n/n ), a power series in x with integer coefficients.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =10a(4) =41a(5) =219a(6) =1602a(7) =16635a(8) =247171a(9) =5242108a(10) =157390565a(11) =6663089873a(12) =396778864166
External references
- oeis: A156170