A188867 Number of n X n binary arrays without the pattern 0 0 0 antidiagonally or horizontally.

2, 16, 316, 21937, 4805140, 3043939392, 6231989402196, 39466951597153578, 765738615267315132042, 46457365071065953602984688, 8729291812408997804314294504336, 5077761520250192263227063403337912870

Offset: 1

Author

R. H. Hardin Apr 12 2011

Keywords

• nonn

Comments

Diagonal of A188874

Examples

			Some solutions for 3X3
..1..0..1....0..1..0....0..0..1....0..0..1....0..1..0....1..1..1....1..0..1
..1..1..0....1..0..1....1..1..0....0..1..1....0..1..0....1..0..0....1..1..0
..0..1..0....1..1..0....1..0..0....1..0..0....0..1..1....1..1..1....1..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..18