%I #8 Jul 25 2023 08:51:19
%S 1,1,14,476,31640,3953488,939383200,433281169216,393718899904640,
%T 710399428248892928,2554705943898166145024,18342976469146094416494592,
%U 263185684727811758287894478848,7549222852919288301041224694890496
%N G.f. satisfies A(x) = 1 + x*A(2x)^7.
%H Seiichi Manyama, <a href="/A171208/b171208.txt">Table of n, a(n) for n = 0..79</a>
%o (PARI) {a(n)=local(A=1+x+x*O(x^n)); for(i=0, n, A=1+x*subst(A, x, 2*x)^7); polcoeff(A, n)}
%Y Cf. A135867, A171200-A171207, A171209, A171210-A171211, A343439.
%K nonn
%O 0,3
%A _Paul D. Hanna_, Dec 05 2009
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