A317035 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

64, 752, 2591, 33798, 417156, 4939166, 64983838, 900623946, 12923660734, 186496571520, 2743455526628, 40953644119385, 610958839980222, 9168732518369501, 138157741872448535, 2080038991736467931

Offset

1,1

Comments

Column 7 of A317036.

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. .0..0..0..0..1..1..0. .0..0..0..0..1..0..0
..0..0..0..0..0..0..1. .0..0..0..0..0..0..0. .0..1..0..0..0..0..1
..0..0..0..0..0..0..1. .0..0..0..0..0..0..0. .0..0..0..1..0..0..0
..0..0..1..0..0..0..0. .1..0..0..1..1..0..1. .1..0..0..0..0..0..0
..0..0..0..0..0..1..0. .0..0..0..1..1..1..0. .0..1..0..0..0..0..0

Crossrefs

Cf. A317036.

Sequence in context: A304346 A316217 A305641 * A305910 A317152 A316882

Adjacent sequences: A317032 A317033 A317034 * A317036 A317037 A317038

Keyword

nonn

Author

R. H. Hardin, Jul 19 2018

Status

approved