Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1.
A265868
Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any antidiagonal neighbor equal to n-1.
Terms
- a(0) =1a(1) =4a(2) =340a(3) =56496a(4) =28645840a(5) =20091622560
External references
- oeis: A265868