Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.
A264558
Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =156a(4) =2032a(5) =30912a(6) =737280a(7) =19491840a(8) =585019584a(9) =26539425792
External references
- oeis: A264558