A306141 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

5, 1145, 14804, 339596, 8151029, 173607551, 3871080422, 86575577937, 1913874691873, 42539947940946, 945136700580784, 20979913055489865, 465960885574214762, 10347937919343673443, 229789796574615420323

Offset

1,1

Comments

Column 6 of A306143.

Links

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

Example

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

Crossrefs

Cf. A306143.

Sequence in context: A316581 A304595 A316381 * A317374 A189249 A034864

Adjacent sequences: A306138 A306139 A306140 * A306142 A306143 A306144

Keyword

nonn

Author

R. H. Hardin, Jun 22 2018

Status

approved