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Search: id:A113670
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| A113670 |
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Self-convolution 4-th power equals A113664, where a(n) = n*A113664(n-1) for n>=1, with a(0)=1. |
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7
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| 1, 1, 8, 114, 2224, 53725, 1528200, 49703108, 1813503712, 73247619060, 3242579748000, 156107189374202, 8121266448765936, 454110696002834806, 27165980379205109232, 1731608155057922555400, 117183510733473232477120
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OFFSET
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0,3
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FORMULA
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G.f. satisfies: A(x) = 1 + x*d/dx[x*A(x)^4].
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PROGRAM
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(PARI) {a(n)=local(A=1+x*O(x^n)); for(i=1, n, A=1+x*deriv(x*A^4)); polcoeff(A, n, x)}
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CROSSREFS
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Cf. A113664, A000699, A113669, A113671, A113672, A113673, A113674.
Sequence in context: A099715 A023814 A062126 this_sequence A156468 A056988 A085699
Adjacent sequences: A113667 A113668 A113669 this_sequence A113671 A113672 A113673
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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), Nov 04 2005
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