A189189 Number of n X n binary arrays without the pattern 0 0 1 vertically or antidiagonally.

2, 16, 316, 15326, 1579664, 367115337, 184841938568, 209311662962608, 525679279319545840, 2979655033608039508606, 37875187935027408625277140, 1087648851912447148168100296827, 70353152136567154798416885107484140

Offset: 1

Author

R. H. Hardin Apr 18 2011

Keywords

• nonn

Comments

Diagonal of A189196

Examples

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

Links

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