OFFSET
0,11
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..683
FORMULA
a(n) = Product_{i=0..8} floor((n+i)/9)!.
a(n) ~ (2*Pi*n)^4 * n! / 9^(n + 9/2). - Vaclav Kotesovec, Oct 02 2018
MATHEMATICA
Table[Product[Floor[(n + i)/9]!, {i, 0, 8}], {n, 0, 40}] (* Vaclav Kotesovec, Oct 02 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Alois P. Heinz, Jul 15 2016
STATUS
approved