A208033 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 0 and 1 0 1 vertically.

2, 16, 102, 961, 21147, 811801, 44918280, 4186478209, 714320063886, 207770920176121, 99259943862610227, 80457895275392565121, 112399424925446158169479, 266845510437068945897046016

Offset: 1

Author

R. H. Hardin Feb 22 2012

Keywords

• nonn

Comments

Diagonal of A208039

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..20