A316582 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 4184, 25271, 634867, 11450072, 209344758, 4227286531, 79708721021, 1560689236544, 30135348185417, 583386750149395, 11308476165531835, 218830109654585064, 4239285443425028198, 82084075926813940322

Offset

1,1

Comments

Column 7 of A316583.

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..0..1..0..0. .0..0..0..1..1..0..1
..0..1..0..0..0..0..1. .0..1..0..1..0..1..0. .0..1..0..1..1..1..0
..0..0..0..1..0..0..0. .0..0..0..0..0..0..0. .0..0..0..1..1..1..0
..0..0..0..0..1..1..0. .0..0..0..0..0..0..0. .0..0..0..1..0..1..0
..1..1..1..0..1..1..1. .0..1..1..1..1..1..0. .1..0..1..1..1..1..1

Crossrefs

Cf. A316583.

Sequence in context: A303895 A305287 A304900 * A304596 A316382 A306142

Adjacent sequences: A316579 A316580 A316581 * A316583 A316584 A316585

Keyword

nonn

Author

R. H. Hardin, Jul 07 2018

Status

approved