A316120 Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 26, 47, 213, 1109, 5426, 26626, 133245, 708063, 3653857, 18764147, 97933770, 509275871, 2641581998, 13734083323, 71435032340, 371258276206, 1929981180495, 10035489710904, 52173575660786, 271248632206329, 1410301795143440

Offset

1,2

Comments

Column 5 of A316123.

Links

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

Example

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

Crossrefs

Cf. A316123.

Sequence in context: A291672 A159651 A118367 * A261932 A364025 A324041

Adjacent sequences: A316117 A316118 A316119 * A316121 A316122 A316123

Keyword

nonn

Author

R. H. Hardin, Jun 24 2018

Status

approved