A316580 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.

3, 313, 1312, 15200, 130212, 1216428, 11450072, 105422515, 988545949, 9166436121, 85459418600, 795086199327, 7401342551735, 68898293444004, 641280839223353, 5969509980963051, 55564639563890810, 517217476826806862

Offset

1,1

Comments

Column 5 of A316583.

Links

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

Example

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

Crossrefs

Cf. A316583.

Sequence in context: A303893 A305285 A304898 * A304594 A316380 A306140

Adjacent sequences: A316577 A316578 A316579 * A316581 A316582 A316583

Keyword

nonn

Author

R. H. Hardin, Jul 07 2018

Status

approved