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A265952
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E.g.f.: Product_{k>=1} (1 + exp(x)*x^k).
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5
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1, 1, 4, 21, 136, 1045, 9396, 99379, 1161952, 14904873, 208925380, 3207759511, 53349017184, 950481426349, 17959336305652, 360094085423115, 7656053670162496, 172173524035504849, 4077253037751090948, 101263725993658291615, 2627592803013505930240
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OFFSET
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0,3
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LINKS
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MATHEMATICA
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nmax=20; CoefficientList[Series[Product[(1+E^x*x^k), {k, 1, nmax}], {x, 0, nmax}], x] * Range[0, nmax]!
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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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