Number of n X 2 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
A207277
Number of n X 2 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
Terms
- a(0) =16a(1) =256a(2) =3364a(3) =45796a(4) =620944a(5) =8421604a(6) =114190596a(7) =1548422500a(8) =20996589604a(9) =284714019396
External references
- oeis: A207277