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Search: id:A113663
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| 1, 3, 21, 226, 3216, 56229, 1158249, 27367560, 728245038, 21531918486, 700096811670, 24826071871890, 953594302010230, 39446976470619801, 1748616265593936681, 82701936091459565976, 4157268410857737364182
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OFFSET
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0,2
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FORMULA
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G.f. satisfies: A(x) = (1 + x*d/dx[x*A(x)] )^3.
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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))^3); polcoeff(A, n, x)}
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CROSSREFS
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Cf. A113669, A113662, A113664, A113665, A113666, A113667, A113668.
Sequence in context: A032033 A099121 A107864 this_sequence A082545 A074638 A097329
Adjacent sequences: A113660 A113661 A113662 this_sequence A113664 A113665 A113666
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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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