A208415 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 0 and 0 1 1 vertically.

2, 16, 102, 1269, 18395, 365094, 8948825, 295643872, 11569038318, 627185978622, 39743547264799, 3541122637275087, 367535911624122068, 55280614681310159979, 9428817551220326025746, 2476044134980962346444356

Offset: 1

Author

R. H. Hardin Feb 26 2012

Keywords

• nonn

Comments

Diagonal of A208420

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..22