A207301 Number of n X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 0 vertically.

2, 16, 98, 643, 3773, 23091, 154228, 1050811, 7236644, 51776044, 383107149, 2907310903, 22583670553, 180085426836, 1470632881207

Offset: 1

Author

R. H. Hardin Feb 16 2012

Keywords

• nonn

Comments

Diagonal of A207305

Examples

			Some solutions for n=4
..0..1..0..0....1..0..0..1....1..1..1..1....0..0..1..1....1..0..0..1
..1..0..0..1....0..1..1..0....1..1..1..1....0..0..1..1....0..1..0..0
..1..1..0..0....1..1..0..0....1..1..1..1....0..0..1..1....1..1..0..0
..1..1..0..0....0..1..1..0....1..1..1..1....0..0..1..1....1..1..0..0