A305095 Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

5, 109, 158, 142, 1987, 7273, 10652, 64966, 320192, 708423, 2636757, 13429934, 39637595, 125263401, 569352731, 1996214758, 6279711801, 25173920295, 95148797434, 313904299488, 1160630719421, 4441812097013, 15391681955806

Offset

1,1

Comments

Column 6 of A305097.

Links

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

Example

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

Crossrefs

Cf. A305097.

Sequence in context: A306990 A048564 A139971 * A128110 A316755 A199307

Adjacent sequences: A305092 A305093 A305094 * A305096 A305097 A305098

Keyword

nonn

Author

R. H. Hardin, May 25 2018

Status

approved