A298145 Number of nX7 0..1 arrays with every element equal to 2, 3, 6 or 7 king-move adjacent elements, with upper left element zero.

0, 22, 8, 43, 73, 161, 180, 544, 1076, 2574, 5208, 11862, 27724, 63854, 146389, 334035, 776137, 1801528, 4174743, 9665985, 22409640, 52068197, 120962558, 281027721, 652954484, 1517843079, 3529411760, 8207419347, 19087389894, 44394830483

Offset

1,2

Comments

Column 7 of A298146.

Links

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

Example

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

Crossrefs

Cf. A298146.

Sequence in context: A040466 A133682 A134911 * A298176 A113783 A298781

Adjacent sequences: A298142 A298143 A298144 * A298146 A298147 A298148

Keyword

nonn

Author

R. H. Hardin, Jan 13 2018

Status

approved