Number of nX7 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
A207234
Number of nX7 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.
Terms
- a(0) =1121a(1) =1256641a(2) =191801477a(3) =68168506265
External references
- oeis: A207234