A317375 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 4184, 83982, 3113246, 134524463, 4822465183, 185409601420, 7139196864817, 270802813530242, 10353229306821779, 395315761539270049, 15081544956388244304, 575771362791386785384, 21976775345261329189777

Offset

1,1

Comments

Column 7 of A317376.

Links

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

Example

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

Crossrefs

Cf. A317376.

Sequence in context: A304596 A316382 A306142 * A100351 A045478 A055319

Adjacent sequences: A317372 A317373 A317374 * A317376 A317377 A317378

Keyword

nonn

Author

R. H. Hardin, Jul 26 2018

Status

approved