A316959 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

64, 8192, 478941, 25592081, 1426910760, 78728223139, 4359094468163, 241311689147759, 13360998189431905, 739884471274654354, 40972574529937752684, 2269038902333255090357, 125658873875602764048022

Offset

1,1

Comments

Column 7 of A316960.

Links

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

Example

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

Crossrefs

Cf. A316960.

Sequence in context: A303474 A305522 A208714 * A316814 A320370 A298969

Adjacent sequences: A316956 A316957 A316958 * A316960 A316961 A316962

Keyword

nonn

Author

R. H. Hardin, Jul 17 2018

Status

approved