Number of nX6 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
A207281
Number of nX6 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) =2902a(1) =8421604a(2) =6979630118
External references
- oeis: A207281