Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 6.

A264711

Number of 3Xn arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 3 and columns nondecreasing modulo 6.

Terms

    a(0) =1a(1) =4a(2) =152a(3) =8064a(4) =789696a(5) =120512448a(6) =29928517632

External references