Number of nX3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 4.
A264637
Number of nX3 arrays of permutations of 0..n*3-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 4.
Terms
- a(0) =2a(1) =28a(2) =960a(3) =46656a(4) =4561920a(5) =829440000a(6) =218972160000
External references
- oeis: A264637