Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1.
A265867
Number of nX2 arrays containing 2 copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1.
Terms
- a(0) =1a(1) =2a(2) =42a(3) =984a(4) =48216a(5) =2869200a(6) =278125200a(7) =31015797120
External references
- oeis: A265867