A284195 Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 equal to the number of 0's adjacent to some 1, with top left element zero.

6, 40, 412, 5268, 71181, 1001047, 14392557, 210449237, 3113715736, 46513546197, 700181791562, 10607318574496, 161549350874286, 2471455506147877, 37954136853757557, 584775548813145717, 9035444086858648868

Offset: 1

Author

R. H. Hardin, Mar 22 2017

Keywords

• nonn

Comments

Column 4 of A284199.

Examples

			Some solutions for n=4
..0..1..0..1. .0..0..1..1. .0..0..0..0. .0..0..0..0. .0..0..0..0
..0..0..0..1. .1..1..0..0. .0..0..0..1. .1..0..1..1. .1..1..0..0
..0..0..1..0. .0..1..1..0. .0..1..1..0. .0..1..1..0. .1..1..0..0
..1..1..1..1. .0..0..1..1. .1..1..0..1. .0..1..1..1. .1..1..1..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..207

Crossrefs

Cf. A284199.