A219135 Unchanging value maps: number of n X n binary arrays indicating the locations of corresponding elements unequal to no horizontal, diagonal or antidiagonal neighbor in a random 0..2 n X n array.

1, 6, 78, 1774, 101600, 12867295, 3862325048, 2678391894154

Offset: 1

Author

R. H. Hardin Nov 12 2012

Keywords

• nonn

Comments

Diagonal of A219142

Examples

			Some solutions for n=3
..1..0..1....1..0..1....0..0..0....0..0..1....0..0..1....0..0..0....1..0..0
..0..0..0....0..0..1....0..0..0....0..0..1....0..0..0....0..1..0....1..0..0
..0..0..0....1..0..0....1..0..0....0..0..1....1..0..0....1..1..1....0..0..1