A316755 Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

5, 109, 185, 142, 3366, 10850, 23857, 205529, 822953, 2592451, 14966482, 65348783, 244338602, 1196300940, 5327481349, 21670205298, 99204862693, 441433364881, 1870156906809, 8335414318491, 36918152188856, 159440282900858

Offset

1,1

Comments

Column 6 of A316757.

Links

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

Example

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

Crossrefs

Cf. A316757.

Sequence in context: A139971 A305095 A128110 * A199307 A195561 A142510

Adjacent sequences: A316752 A316753 A316754 * A316756 A316757 A316758

Keyword

nonn

Author

R. H. Hardin, Jul 12 2018

Status

approved