A285746 Number of n X 4 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.

2, 44, 630, 8544, 125088, 1835412, 27339964, 410644956, 6209001966, 94379911740, 1441030936810, 22084845714940, 339564086313454, 5235658587223164, 80926601563138862, 1253589943179659024, 19456171723796564164

Offset: 1

Author

R. H. Hardin, Apr 25 2017

Keywords

• nonn

Comments

Column 4 of A285750.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..164

Crossrefs

Cf. A285750.