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Coefficient of x^n in g.f.^n is A086608(n).
1

%I #2 Apr 30 2014 01:37:33

%S 1,1,1,2,2,6,12,29,64,114,404,641,2637,3289,15853,22068,98168,164238,

%T 547111,1292502,3020056,10442124,15954682,79385179,89229089,576106142,

%U 595912173,3848976774,4853522881,23699101223,44768315427,132700765034

%N Coefficient of x^n in g.f.^n is A086608(n).

%K nonn

%O 0,4

%A _Michael Somos_, Sep 24 2003