191801477

Appears in sequences

• Number of nX3 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal.at n=6A207230
• 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.at n=2A207234