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A365971
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Expansion of e.g.f. exp( Sum_{k>=0} x^(3*k+2) / (3*k+2) ).
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1
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1, 0, 1, 0, 3, 24, 15, 504, 5145, 9072, 300321, 3795120, 12284811, 441965160, 6672128463, 33017539464, 1306646813745, 22946632267104, 156924556846785, 6810382180903392, 136393286581031571, 1209571612450077240, 57211108821810731151, 1286884543482633415320
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OFFSET
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0,5
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LINKS
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FORMULA
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a(0) = 1; a(n) = (n-1)! * Sum_{k=0..floor((n-2)/3)} a(n-3*k-2)/(n-3*k-2)!.
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PROG
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(PARI) my(N=30, x='x+O('x^N)); Vec(serlaplace(exp(sum(k=0, N\3, x^(3*k+2)/(3*k+2)))))
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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