G.f.: exp( Sum_{n>=1} [Sum_{k>=1} k^(n^2) * x^k]^n / n ), a power series in x with integer coefficients.
A276749
G.f.: exp( Sum_{n>=1} [Sum_{k>=1} k^(n^2) * x^k]^n / n ), a power series in x with integer coefficients.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =22a(4) =749a(5) =349707a(6) =6584568222
External references
- oeis: A276749