A318089 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 10, 11, 547, 1945, 10843, 68301, 432496, 2725920, 16794426, 104702713, 658121305, 4104184369, 25710109361, 160430205685, 1004059959169, 6274102880862, 39235874968111, 245262120362372, 1533405500906219

Offset

1,2

Comments

Column 6 of A318091.

Links

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

Example

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

Crossrefs

Cf. A318091.

Sequence in context: A041218 A300458 A041917 * A109280 A181756 A287874

Adjacent sequences: A318086 A318087 A318088 * A318090 A318091 A318092

Keyword

nonn

Author

R. H. Hardin, Aug 16 2018

Status

approved