A316309 Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.

13, 61, 83, 404, 1488, 4431, 17487, 75221, 293206, 1262596, 5656690, 25122303, 114261106, 529250742, 2459225011, 11507032895, 54202472427, 256046793093, 1212774884768, 5758714680206, 27386651158332, 130399164042147

Offset

1,1

Comments

Column 6 of A316311.

Links

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

Example

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

Crossrefs

Cf. A316311.

Sequence in context: A002647 A306127 A118711 * A317264 A028874 A087106

Adjacent sequences: A316306 A316307 A316308 * A316310 A316311 A316312

Keyword

nonn

Author

R. H. Hardin, Jun 29 2018

Status

approved