A316238 Number of n X 7 0..1 arrays with every element unequal to 0, 1, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

21, 289, 358, 4802, 41303, 496125, 10057887, 174856739, 2842217588, 54230111803, 1003921448858, 17866195865791, 330277258832282, 6096326802262564, 111176404866466199, 2041807844235415462, 37559181274357655977

Offset

1,1

Comments

Column 7 of A316239.

Links

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

Example

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

Crossrefs

Cf. A316239.

Sequence in context: A188710 A304354 A305917 * A317159 A305648 A316924

Adjacent sequences: A316235 A316236 A316237 * A316239 A316240 A316241

Keyword

nonn

Author

R. H. Hardin, Jun 27 2018

Status

approved