OFFSET
2,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 2..57
David Peter Hadrian Ulgenes, Series and Product Representations of Gamma and Pseudogamma Functions, arXiv:2301.09699 [math.NT], 2023.
MATHEMATICA
Array[Denominator[(# - 2)!* Sum[(-1)^(k + 1)/((# - k)!*k^k), {k, #}]] &, 13, 2] (* Michael De Vlieger, Jan 25 2023 *)
PROG
(PARI) a(n) = denominator((n-2)!*sum(k=1, n, (-1)^(k+1)/((n-k)!*k^k)));
CROSSREFS
KEYWORD
nonn,frac
AUTHOR
Michel Marcus, Jan 25 2023
STATUS
approved