A306058 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

32, 184, 526, 2168, 16833, 99928, 513811, 3086539, 18841620, 107600141, 620569652, 3677697287, 21538095731, 125066191568, 731799182359, 4288741766057, 25039445198605, 146247552076704, 855504338243757, 5001421011839795

Offset

1,1

Comments

Column 6 of A306060.

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

Crossrefs

Cf. A306060.

Sequence in context: A165010 A304846 A316543 * A317236 A233387 A200840

Adjacent sequences: A306055 A306056 A306057 * A306059 A306060 A306061

Keyword

nonn

Author

R. H. Hardin, Jun 18 2018

Status

approved