A306134 Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 272, 842, 16877, 267988, 3176303, 50158767, 730698959, 10451513277, 154874245520, 2263817985343, 33101974882547, 485824519555993, 7116775107630422, 104290593029224757, 1528789092800095102

Offset

1,2

Comments

Column 6 of A306136.

Links

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

Example

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

Crossrefs

Cf. A306136.

Sequence in context: A270302 A304549 A316374 * A317269 A253113 A234884

Adjacent sequences: A306131 A306132 A306133 * A306135 A306136 A306137

Keyword

nonn

Author

R. H. Hardin, Jun 22 2018

Status

approved