A207263 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 1 and 1 0 1 vertically.

2, 16, 82, 611, 5904, 45520, 467686, 4556171, 48655983, 567847595, 6351729691, 80023297510, 1005050679531, 12834603243934, 174354454607454, 2353308940308585, 32870079608035300, 470039857440029540

Offset: 1

Author

R. H. Hardin Feb 16 2012

Keywords

• nonn

Comments

Diagonal of A207269

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..23