A189338 Number of nX4 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally.

15, 225, 3375, 36626, 390721, 3988168, 42069350, 442969881, 4709354541, 49857094654, 528436125424, 5591212296038, 59196669906872, 626540356943069, 6633322246811551, 70220475509151710, 743409267344795743

Offset: 1

Author

R. H. Hardin Apr 20 2011

Keywords

• nonn

Comments

Column 4 of A189343

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..0..1..0....0..0..1..0....0..0..1..0....0..1..1..0....0..0..0..0
..1..0..0..0....0..0..1..1....0..1..0..1....0..0..1..0....0..0..0..1
..0..0..1..0....0..1..0..0....1..0..1..0....1..1..1..0....0..1..1..0
..0..0..0..0....1..1..0..0....1..1..0..1....1..1..0..0....0..0..0..0
		

Links

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