A316800 Number of nX7 0..1 arrays with every element unequal to 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

0, 72, 264, 2184, 18897, 213931, 1964108, 19450547, 202140736, 2027372089, 20586190481, 210496700285, 2143793481874, 21847592218744, 223011991274682, 2275397535129226, 23213772911675819, 236905932785631153

Offset

1,2

Comments

Column 7 of A316801.

Links

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

Example

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

Crossrefs

Cf. A316801.

Sequence in context: A158488 A165139 A305222 * A004007 A279272 A378002

Adjacent sequences: A316797 A316798 A316799 * A316801 A316802 A316803

Keyword

nonn

Author

R. H. Hardin, Jul 14 2018

Status

approved