A296314 Number of n X n 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 1 neighboring 1.

1, 6, 32, 434, 12547, 676269, 78105580, 18043360170, 8435284786616, 8062065704707386, 15602483060688719807, 61357587200669343827967, 490367520450812937863879738, 7957358933563948031830555664333

Offset: 1

Author

R. H. Hardin, Dec 10 2017

Keywords

• nonn

Comments

Diagonal of A296320.

Examples

			Some solutions for n=5
..1..1..0..1..0. .1..0..0..0..0. .0..0..0..0..0. .0..0..0..1..0
..0..0..0..1..0. .1..0..0..1..1. .1..0..0..1..0. .0..0..1..0..1
..0..0..0..0..0. .0..0..0..0..0. .1..0..1..0..0. .0..0..0..1..0
..1..0..1..1..0. .1..0..1..1..0. .0..0..0..1..0. .1..0..0..0..1
..1..0..0..0..0. .1..0..0..0..0. .1..1..0..1..0. .1..0..0..1..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..16

Crossrefs

Cf. A296320.