A189257 Number of n X n binary arrays without the pattern 0 0 1 diagonally, antidiagonally or horizontally.

2, 16, 280, 8900, 552752, 68635317, 17747766886, 9421503162646, 10606582683139102, 24593238398265693575, 121227430181311808878846, 1234571538047080619811567488, 26705899629138438568650919545084

Offset: 1

Author

R. H. Hardin Apr 19 2011

Keywords

• nonn

Comments

Diagonal of A189264

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..15