A285026 Number of n X 4 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 one less than the number of 0's adjacent to some 1.

2, 26, 442, 6460, 96458, 1449814, 22043878, 336883696, 5171750894, 79634735346, 1229304353554, 19015329654036, 294656614022300, 4573021347213134, 71071712948803680, 1105968089007186270, 17230453143587374712

Offset: 1

Author

R. H. Hardin, Apr 08 2017

Keywords

• nonn

Comments

Column 4 of A285030.

Examples

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

Links

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

Crossrefs

Cf. A285030.