Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.

A264562

Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.

Terms

    a(0) =1a(1) =15a(2) =888a(3) =84672a(4) =17444160a(5) =5356808640

External references