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Search: id:A134086
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| A134086 |
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a(n) = [x^n] G(x)^(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, 2, 8, 80, 2464, 255808, 90320512, 108630646016, 451779274750464, 6626041977171637248, 348460175972420307970048, 66523219303893985885632450560, 46531358180797100870477866170818560
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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a(n) = 2^n * A134088(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]}
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CROSSREFS
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Cf. A134084, A134085, A134087, A134088, A134089.
Sequence in context: A130530 A134529 A134054 this_sequence A013175 A120820 A134089
Adjacent sequences: A134083 A134084 A134085 this_sequence A134087 A134088 A134089
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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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