A305173 Number of nX6 0..1 arrays with every element unequal to 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

0, 209, 543, 13970, 218476, 2549718, 40793823, 587542013, 8317497391, 122410918154, 1769703359532, 25611323679926, 372124817557660, 5393189658763700, 78206120530424501, 1134400785272299908

Offset

1,2

Comments

Column 6 of A305175.

Links

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

Example

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

Crossrefs

Cf. A305175.

Sequence in context: A305507 A211672 A250780 * A316761 A260011 A203048

Adjacent sequences: A305170 A305171 A305172 * A305174 A305175 A305176

Keyword

nonn

Author

R. H. Hardin, May 26 2018

Status

approved