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A334565
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E.g.f.: exp(-(x + x^2 + x^3 + x^4 + x^5)).
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3
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1, -1, -1, -1, 1, 19, 871, 1091, -12319, -185401, -1871729, -16185401, 124125409, 2716194779, 30386265911, 192015557579, -1519087028159, -90118169425649, -1286566655151329, -8992926875821681, 96361313388009281, 5078872062174772259, 107995117552995689479, 996704518577739393619
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OFFSET
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0,6
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LINKS
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FORMULA
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a(0) = 1 and a(n) = - (n-1)! * Sum_{k=1..min(5,n)} k*a(n-k)/(n-k)!.
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MATHEMATICA
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m = 25; Range[0, m]! * CoefficientList[Series[Exp[-(x + x^2 + x^3 + x^4 + x^5)], {x, 0, m}], x] (* Amiram Eldar, May 03 2021 *)
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PROG
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(PARI) N=40; x='x+O('x^N); Vec(serlaplace(exp(-x-x^2-x^3-x^4-x^5)))
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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STATUS
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approved
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