Number of 2Xn arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 3.
A264561
Number of 2Xn 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) =24a(3) =316a(4) =6080a(5) =149824a(6) =5728896a(7) =259780608a(8) =14154310656
External references
- oeis: A264561