A221025 Sum of neighbor maps: log base 2 of the number of n X n binary arrays indicating the locations of corresponding elements equal to the sum mod 2 of their horizontal, vertical and antidiagonal neighbors in a random 0..1 n X n array.

1, 3, 7, 16, 24, 33, 45, 63, 81, 100

Offset: 1

Author

R. H. Hardin Dec 29 2012

Keywords

• nonn

Comments

Diagonal of A221028

Examples

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