E.g.f.: exp(x*exp(x*exp(x*exp(x))) + 1/2*x^2*exp(x*exp(x*exp(x)))^2).
A060911
E.g.f.: exp(x*exp(x*exp(x*exp(x))) + 1/2*x^2*exp(x*exp(x*exp(x)))^2).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =25a(4) =218a(5) =2331a(6) =29152a(7) =417607a(8) =6746700a(9) =121312441a(10) =2401341056a(11) =51857779689
External references
- oeis: A060911