OFFSET
1,4
COMMENTS
For labeled version, see A277257.
FORMULA
T(n,k) = A277256(n,k) * (n*k)! / n! / k^n.
EXAMPLE
Table T(n,k):
n=1: 0, 0, 2, 12, 312, 9600, ...
n=2: 1, 12, 3280, 5972400, ...
n=3: 2, 1200, 97193600, ...
n=4: 9, 498960, 14591060915200, ...
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Max Alekseyev, Oct 07 2016
STATUS
approved