OFFSET
0,6
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..481
FORMULA
a(n) = n! * Sum_{k=0..floor(n/5)} (-k)^(n-5*k)/(k! * (n-5*k)!). - Seiichi Manyama, Jul 10 2022
MATHEMATICA
With[{nn=30}, CoefficientList[Series[Exp[x^5 Exp[-x]], {x, 0, nn}], x] Range[0, nn]!] (* Harvey P. Dale, Jan 12 2018 *)
PROG
(PARI) x='x+O('x^66); Vec(serlaplace(exp(x^5*exp(-x))))
(PARI) a(n) = n!*sum(k=0, n\5, (-k)^(n-5*k)/(k!*(n-5*k)!)); \\ Seiichi Manyama, Jul 10 2022
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Sep 27 2017
STATUS
approved