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Search: id:A134087
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| A134087 |
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a(n) = [x^n] G(x)^(2^(n+1)) 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, 4, 32, 672, 42816, 8822400, 6065609984, 14256471226880, 117000916309144576, 3410202131850138806272, 357670541003601468527333376, 136391046228660672398602237353984
(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 * A134089(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+1)))[n+1]}
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CROSSREFS
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Cf. A134084, A134085, A134086, A134088, A134089.
Sequence in context: A013041 A006024 A118995 this_sequence A132854 A136471 A028369
Adjacent sequences: A134084 A134085 A134086 this_sequence A134088 A134089 A134090
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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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