A317235 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

16, 64, 211, 674, 4798, 24487, 112675, 602717, 3142280, 15736309, 80763353, 416422679, 2125195114, 10872692496, 55771924996, 285544506235, 1461717204424, 7488008711842, 38350390977946, 196383133324671, 1005774393333186

Offset

1,1

Comments

Column 5 of A317238.

Links

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

Example

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

Crossrefs

Cf. A317238.

Sequence in context: A059165 A212506 A212512 * A255661 A073718 A230970

Adjacent sequences: A317232 A317233 A317234 * A317236 A317237 A317238

Keyword

nonn

Author

R. H. Hardin, Jul 24 2018

Status

approved