A304695 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

5, 333, 2615, 24408, 263381, 2753404, 27769991, 285425506, 2949991545, 30340096076, 311700072509, 3208471699212, 33025788432538, 339740952430173, 3495474272849754, 35969390221006522, 370105259467117428

Offset

1,1

Comments

Column 6 of A304697.

Links

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

Example

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

Crossrefs

Cf. A304697.

Sequence in context: A305365 A304957 A316639 * A316446 A316128 A317434

Adjacent sequences: A304692 A304693 A304694 * A304696 A304697 A304698

Keyword

nonn

Author

R. H. Hardin, May 17 2018

Status

approved