A207595 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.

2, 16, 90, 441, 3915, 42025, 292600, 1982464, 21925800, 268730449, 2281109103, 19215781641, 242188032450, 3266593546384, 32361595709850, 320442399819025, 4434278073813775, 64468102969055809, 723471023371037040

Offset: 1

Author

R. H. Hardin Feb 19 2012

Keywords

• nonn

Comments

Diagonal of A207599

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..64