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Search: id:A134088
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| A134088 |
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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. |
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+0
6
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| 1, 1, 2, 10, 154, 7994, 1411258, 848676922, 1764762791994, 12941488236663354, 340293140598066707002, 32482040675729485295718970, 11360194868358667204706510295610
(list; graph; listen)
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OFFSET
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0,3
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FORMULA
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a(n) = A134086(n)/2^n.
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PROGRAM
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(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}
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CROSSREFS
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Cf. A134084, A134085, A134086, A134087, A134089.
Sequence in context: A060595 A086619 A007080 this_sequence A076659 A007131 A126449
Adjacent sequences: A134085 A134086 A134087 this_sequence A134089 A134090 A134091
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KEYWORD
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nonn
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AUTHOR
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Paul D. Hanna (pauldhanna(AT)juno.com), Oct 26 2007
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