G.f.: A(x) = exp( Sum_{n>=1} A167010(n)*x^n/n ) where A167010(n) = Sum_{k=0..n} binomial(n,k)^n.
A167007
G.f.: A(x) = exp( Sum_{n>=1} A167010(n)*x^n/n ) where A167010(n) = Sum_{k=0..n} binomial(n,k)^n.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =26a(4) =501a(5) =42262a(6) =14564184a(7) =18926665052
External references
- oeis: A167007