A316617 Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 26, 29, 70, 189, 468, 1446, 3769, 11196, 32714, 93764, 279178, 822287, 2402170, 7095848, 20929687, 61595458, 181688654, 535849675, 1579611326, 4659075312, 13742067957, 40526906270, 119535724423, 352581261330, 1039940121804

Offset

1,2

Comments

Column 5 of A316620.

Links

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

Example

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

Crossrefs

Cf. A316620.

Sequence in context: A106552 A106550 A304949 * A303815 A069962 A178098

Adjacent sequences: A316614 A316615 A316616 * A316618 A316619 A316620

Keyword

nonn

Author

R. H. Hardin, Jul 08 2018

Status

approved