A317221 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 5824, 272012, 18667993, 1193567097, 77171164500, 4981964443017, 321779228843527, 20780911115253208, 1342134239899231736, 86681283982725408330, 5598303502470257891647, 361566306104618861816148

Offset

1,1

Comments

Column 7 of A317222.

Links

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

Example

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

Crossrefs

Cf. A317222.

Sequence in context: A304426 A316281 A305960 * A305691 A317071 A316952

Adjacent sequences: A317218 A317219 A317220 * A317222 A317223 A317224

Keyword

nonn

Author

R. H. Hardin, Jul 23 2018

Status

approved