Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any vertical or antidiagonal neighbor equal to n-1.
A266040
Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any vertical or antidiagonal neighbor equal to n-1.
Terms
- a(0) =1a(1) =0a(2) =8a(3) =104a(4) =6440a(5) =312960a(6) =36965712a(7) =3615441408a(8) =668391093888
External references
- oeis: A266040