OFFSET
1,2
FORMULA
a(n) = the coefficient of (x1*...*xn)^(n*(n-1)/2) in (Sum x1^(n-1)*x2^(n-2)*...*xn^0)^n, where the sum is taken over all permutations of the variables x1, ..., xn.
a(n) = A356723(n) * n!.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Max Alekseyev, Aug 24 2022
STATUS
approved