A189156 Number of nX4 binary arrays without the pattern 0 0 1 1 diagonally, vertically or horizontally.

15, 225, 3375, 37976, 424401, 4597967, 48460966, 507947896, 5289780940, 54890361712, 568739622865, 5886254888757, 60885233141712, 629580674428109, 6508873299252199, 67284551942503294, 695503798053171610

Offset: 1

Author

R. H. Hardin Apr 17 2011

Keywords

• nonn

Comments

Column 4 of A189161

Examples

			Some solutions for 5X4
..0..0..0..1....0..0..0..1....0..0..1..0....0..0..0..1....0..0..0..1
..1..1..1..0....1..1..0..0....1..1..0..1....1..1..0..1....1..1..0..1
..0..0..0..1....1..0..1..1....1..1..1..0....0..1..0..1....0..1..1..0
..0..0..0..0....0..0..0..1....0..1..0..1....1..1..1..1....1..1..0..1
..1..1..1..1....0..1..1..0....0..1..1..0....0..1..0..0....0..1..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..200