A297857 Number of nX7 0..1 arrays with every element equal to 1, 2 or 4 king-move adjacent elements, with upper left element zero.

8, 95, 53, 145, 130, 146, 181, 289, 294, 594, 711, 1167, 1681, 2374, 3827, 6129, 8841, 14042, 20888, 31498, 51865, 82514, 125083, 194859, 300754, 471476, 758967, 1198480, 1863140, 2913216, 4550700, 7227150, 11533654, 18154246, 28482607

Offset

1,1

Comments

Column 7 of A297858.

Links

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

Example

Some solutions for n=7
..0..1..0..1..0..1..0. .0..1..0..1..0..1..0. .0..1..0..0..0..1..0
..0..1..0..1..1..0..1. .0..1..0..1..0..1..0. .0..1..1..1..1..1..0
..1..1..1..0..1..0..0. .0..1..0..1..0..1..0. .1..1..0..0..0..1..1
..0..0..1..0..1..1..1. .0..1..0..1..0..1..0. .0..0..1..1..1..0..0
..1..0..1..1..0..1..0. .0..1..0..1..0..1..0. .1..0..0..0..0..0..1
..0..1..0..1..0..1..0. .1..0..0..0..1..1..1. .1..0..1..1..1..0..1
..0..1..1..1..0..1..0. .0..1..1..0..1..0..0. .0..1..0..0..0..1..0

Crossrefs

Cf. A297858.

Sequence in context: A299002 A299669 A080208 * A298092 A298054 A298887

Adjacent sequences: A297854 A297855 A297856 * A297858 A297859 A297860

Keyword

nonn

Author

R. H. Hardin, Jan 07 2018

Status

approved