Expansion of g.f.: exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^(n+k) * x^k] * x^n/n ).
A181082
Expansion of g.f.: exp( Sum_{n>=1} [Sum_{k=0..n} C(n,k)^(n+k) * x^k] * x^n/n ).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =34a(5) =375a(6) =15200a(7) =2066401a(8) =450054919a(9) =199271253643
External references
- oeis: A181082