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A134085
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G.f. A(x) satisfies: [x^(n+1)] A(x)^(2^(n-1)) = [x^n] A(x)^(2^(n-1)) for n>=0.
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5
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1, 2, 2, 0, -14, -448, -51184, -19010908, -22769359414, -90898737308664, -1253962465550022928, -61456191890306429529460, -10904069167010301985293186456, -7094180325240570739957963715038868, -17078681470682524119645862432516881125820
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OFFSET
| 0,2
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FORMULA
| A134087(n) = [x^n] G(x)^(2^n) for n>=0. A134086(n) = [x^n] G(x)^(2^(n-1)) for n>=0.
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PROG
| (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]}
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CROSSREFS
| Cf. A134084, A134086, A134087, A134088, A134089.
Sequence in context: A117270 A181389 A091466 * A151339 A069521 A119836
Adjacent sequences: A134082 A134083 A134084 * A134086 A134087 A134088
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KEYWORD
| sign
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AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com), Oct 25 2007
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