A316762 Number of nX7 0..1 arrays with every element unequal to 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

0, 702, 2120, 93426, 2442827, 42857655, 1169271436, 26888275330, 613862574233, 14778037910333, 344659055793161, 8093639350037409, 190816932040816580, 4479686900365964109, 105350568564132206048, 2477452986577400063741

Offset

1,2

Comments

Column 7 of A316763.

Links

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

Example

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

Crossrefs

Cf. A316763.

Sequence in context: A304155 A305508 A305174 * A158655 A305071 A203350

Adjacent sequences: A316759 A316760 A316761 * A316763 A316764 A316765

Keyword

nonn

Author

R. H. Hardin, Jul 12 2018

Status

approved