E.g.f.: exp(x*exp(x*exp(x)) + 1/2*x^2*exp(x*exp(x))^2).

A060908

E.g.f.: exp(x*exp(x*exp(x)) + 1/2*x^2*exp(x*exp(x))^2).

Terms

    a(0) =1a(1) =1a(2) =4a(3) =25a(4) =194a(5) =1791a(6) =19312a(7) =237637a(8) =3280524a(9) =50136049a(10) =839267936a(11) =15255154179a(12) =298936866736

External references