A317157 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 57, 73, 379, 2345, 9686, 65283, 549872, 3771839, 28567246, 234851866, 1817564695, 14177265464, 113391129716, 895761255070, 7060085683858, 56012131745496, 443559949350229, 3507504163767596, 27777741584507730

Offset

1,1

Comments

Column 5 of A317160.

Links

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

Example

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

Crossrefs

Cf. A317160.

Sequence in context: A304352 A305915 A316236 * A305646 A316922 A317040

Adjacent sequences: A317154 A317155 A317156 * A317158 A317159 A317160

Keyword

nonn

Author

R. H. Hardin, Jul 22 2018

Status

approved