A285024 Number of n X 2 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.

0, 2, 6, 26, 104, 402, 1578, 6196, 24310, 95446, 374872, 1472938, 5790024, 22768624, 89562540, 352395768, 1386874908, 5459330780, 21494802570, 84648191106, 333419873528, 1313575442496, 5176174458602, 20401118165166, 80425006887898

Offset: 1

Author

R. H. Hardin, Apr 08 2017

Keywords

• nonn

Comments

Column 2 of A285030.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A285030.