A305908 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

16, 94, 358, 2075, 15460, 86944, 505624, 3261562, 20076871, 122291472, 764920667, 4760582327, 29499694159, 183860972775, 1146060835954, 7136751168540, 44496700938208, 277508867707850, 1730493817052271, 10794117794385670

Offset

1,1

Comments

Column 5 of A305911.

Links

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

Example

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

Crossrefs

Cf. A305911.

Sequence in context: A317033 A294433 A160750 * A316880 A317150 A317608

Adjacent sequences: A305905 A305906 A305907 * A305909 A305910 A305911

Keyword

nonn

Author

R. H. Hardin, Jun 14 2018

Status

approved