cp's OEIS Frontend

A060910 E.g.f.: exp(x*exp(x*exp(x)) + 1/2*x^2*exp(x*exp(x))^2 + 1/4*x^4*exp(x*exp(x))^4).

%I A060910 #3 May 10 2013 12:44:45
%S A060910 1,1,4,25,200,1941,22552,304207,4660224,79627609,1496962736,
%T A060910 30645682299,677868344056,16102526543533,408764126148120,
%U A060910 11042583947604871,316299747976627808,9574687031473970673
%N A060910 E.g.f.: exp(x*exp(x*exp(x)) + 1/2*x^2*exp(x*exp(x))^2 + 1/4*x^4*exp(x*exp(x))^4).
%D A060910 I. P. Goulden and D. M. Jackson, Combinatorial Enumeration, Wiley, N.Y., 1983.
%F A060910 E.g.f.: exp(Sum_{d|m} T_k^d/d), where T_k = x*exp(T_(k - 1)), k >= 1, T_0 = x; k = 2, m = 4.
%Y A060910 Cf. A000949 - A000951, A060905 - A060913.
%K A060910 nonn
%O A060910 0,3
%A A060910 _Vladeta Jovovic_, Apr 07 2001