E.g.f.: exp(x*G(x)) where G(x) = 1 + x*G(x)^3 is the g.f. of A001764.
A251569
E.g.f.: exp(x*G(x)) where G(x) = 1 + x*G(x)^3 is the g.f. of A001764.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =25a(4) =385a(5) =8661a(6) =255211a(7) =9280573a(8) =401106945a(9) =20075281705
External references
- oeis: A251569