A306059 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

64, 432, 1344, 6955, 67791, 513811, 3363541, 25699369, 199805626, 1461477965, 10788085132, 81469649904, 609282707912, 4528672442297, 33855657682271, 253322029642768, 1890640721511027, 14116244272860371, 105494429560536925

Offset

1,1

Comments

Column 7 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..1..0. .0..0..0..0..0..1..0. .0..1..1..1..1..0..0
..0..0..1..0..0..0..1. .1..0..0..0..0..1..0. .1..0..1..1..0..1..0
..0..0..0..0..0..0..0. .0..1..0..0..0..0..0. .1..1..1..1..0..1..0
..0..0..0..1..0..0..0. .0..0..1..0..0..1..0. .1..1..1..0..0..0..0
..0..0..0..1..0..0..0. .0..0..0..1..0..0..1. .0..0..1..1..1..0..0

Crossrefs

Cf. A306060.

Sequence in context: A316303 A304847 A316544 * A188785 A317237 A282771

Adjacent sequences: A306056 A306057 A306058 * A306060 A306061 A306062

Keyword

nonn

Author

R. H. Hardin, Jun 18 2018

Status

approved