A302671 Number of 5Xn 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 111, 691, 4267, 42367, 352174, 3204956, 28324200, 248482982, 2223806395, 19612845211, 174147277424, 1545345042448, 13690754212668, 121518036637399, 1077456338230779, 9556752221812425, 84773605649902772, 751847387040101232

Offset: 1

Author

R. H. Hardin, Apr 11 2018

Keywords

• nonn

Comments

Row 5 of A302670.

Examples

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

Links

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

Crossrefs

Cf. A302670.