A286210 Number of n X 2 0..1 arrays with the number of 1's king-move adjacent to some 0 two less than the number of 0's adjacent to some 1.

0, 4, 17, 62, 238, 912, 3468, 13224, 50655, 194672, 750165, 2897898, 11219322, 43520672, 169113746, 658172740, 2565143148, 10010037116, 39107620002, 152948221004, 598750691827, 2346021879720, 9199672561659, 36102743330922

Offset: 1

Author

R. H. Hardin, May 04 2017

Keywords

• nonn

Comments

Column 2 of A286216.

Examples

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

Links

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

Crossrefs

Cf. A286216.