E.g.f.: exp(x*exp(x*exp(x*exp(x*exp(x)))) + 1/2*x^2*exp(x*exp(x*exp(x*exp(x))))^2).
A060912
E.g.f.: exp(x*exp(x*exp(x*exp(x*exp(x)))) + 1/2*x^2*exp(x*exp(x*exp(x*exp(x))))^2).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =25a(4) =218a(5) =2451a(6) =33112a(7) =516727a(8) =9117180a(9) =179330905a(10) =3890434256a(11) =92271385449
External references
- oeis: A060912