A316425 Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

13, 105, 148, 640, 2861, 8916, 31433, 121028, 417457, 1475614, 5432803, 19246569, 68385710, 247600789, 884288193, 3153623933, 11341724622, 40601573283, 145110168322, 520483754072, 1864258211948, 6670315687373, 23900988608589

Offset

1,1

Comments

Column 6 of A316427.

Links

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

Example

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

Crossrefs

Cf. A316427.

Sequence in context: A306170 A305345 A316613 * A317427 A320204 A080422

Adjacent sequences: A316422 A316423 A316424 * A316426 A316427 A316428

Keyword

nonn

Author

R. H. Hardin, Jul 02 2018

Status

approved