A316129 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

8, 928, 13488, 204465, 4133986, 83789779, 1573249156, 30313615055, 599085201676, 11683514679835, 226710415914945, 4427771058677754, 86480113102754305, 1685348161505314066, 32865485376562928455, 641275359403985150891

Offset

1,1

Comments

Column 7 of A316130.

Links

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

Example

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

Crossrefs

Cf. A316130.

Sequence in context: A316640 A304696 A316447 * A317435 A241875 A024111

Adjacent sequences: A316126 A316127 A316128 * A316130 A316131 A316132

Keyword

nonn

Author

R. H. Hardin, Jun 24 2018

Status

approved