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 A134088 a(n) = [x^n] G(x)^(2^n)/2^n where G(x) satisfies: [x^(n+1)] G(x)^(2^n) = [x^n] G(x)^(2^n) for n>=0 and G(2x) is the g.f. of A134084. 5

%I #3 Mar 30 2012 18:37:07

%S 1,1,2,10,154,7994,1411258,848676922,1764762791994,12941488236663354,

%T 340293140598066707002,32482040675729485295718970,

%U 11360194868358667204706510295610

%N a(n) = [x^n] G(x)^(2^n)/2^n where G(x) satisfies: [x^(n+1)] G(x)^(2^n) = [x^n] G(x)^(2^n) for n>=0 and G(2x) is the g.f. of A134084.

%F a(n) = A134086(n)/2^n.

%o (PARI) {a(n)=local(A=[1],B);for(i=1,n,A=concat(A,0); B=Vec(Ser(A)^(2^(#A-2)));A[ #A]=(B[ #B-1]-B[ #B])/2^(#A-2));Vec(Ser(A)^(2^n))[n+1]/2^n}

%Y Cf. A134084, A134085, A134086, A134087, A134089.

%K nonn

%O 0,3

%A _Paul D. Hanna_, Oct 26 2007

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