7464960000domain: NAppears in sequencesa(n) = (n!*(n+1)!)^2.at n=5A069135Coefficient of y^(n-3) in expansion of (y+n!)^n.at n=3A134358Number of n X 1 arrays of permutations of 0..n*1-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 4.at n=21A264635Numbers that set records in A379592.at n=30A379593