A302003 Number of 6Xn 0..1 arrays with every element equal to 1, 2 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.

0, 89, 155, 530, 17800, 100176, 1366374, 12824770, 133115004, 1366157014, 13941336537, 143149041167, 1463519003210, 14995308550903, 153525291778069, 1572142108724428, 16098534802420026, 164847528194904576

Offset: 1

Author

R. H. Hardin, Mar 30 2018

Keywords

• nonn

Comments

Row 6 of A301999.

Examples

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

Links

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

Crossrefs

Cf. A301999.