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G.f. A(x) satisfies: A(x) = 1 + x*A(9x)^(1/3).
2

%I #2 Mar 30 2012 18:37:07

%S 1,1,3,72,17055,37191123,731807102304,129633035920625844,

%T 206676152816612330273175,2965575655806580962693168234624,

%U 382974905786208201171725242242120141033

%N G.f. A(x) satisfies: A(x) = 1 + x*A(9x)^(1/3).

%o (PARI) {a(n)=local(A=1+x+x*O(x^n));for(i=0,n,A=1+x*subst(A,x,9*x)^(1/3));polcoeff(A,n)}

%Y Cf. A135863, A135864.

%K nonn

%O 0,3

%A _Paul D. Hanna_, Dec 02 2007