OFFSET
0,2
LINKS
Delbert L. Johnson, Table of n, a(n) for n = 0..251
FORMULA
From Amiram Eldar, Sep 27 2022: (Start)
Sum_{n>=0} 1/a(n) = 24*BesselI(4,2).
Sum_{n>=0} (-1)^n/a(n) = 24*BesselJ(4,2). (End)
a(n) = 1/([x^n] hypergeom([], [5], x)). - Peter Luschny, Sep 13 2024
MAPLE
f := n->n!*(n+4)!/4!;
MATHEMATICA
Table[n! * (n + 4)!/24, {n, 0, 20}] (* Amiram Eldar, Sep 27 2022 *)
PROG
(PARI) a(n) = n!*(n+4)! / 4!; \\ Michel Marcus, Mar 30 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
STATUS
approved