A304541 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

8, 35, 37, 124, 461, 949, 2792, 10838, 31286, 102740, 377657, 1285470, 4523630, 16494893, 59221296, 214677488, 785520010, 2868338992, 10505555278, 38572905642, 141632778198, 520593744190, 1914834430000, 7044479831512

Offset

1,1

Comments

Column 5 of A304544.

Links

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

Example

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

Crossrefs

Cf. A304544.

Sequence in context: A304852 A305249 A316549 * A306126 A316308 A317263

Adjacent sequences: A304538 A304539 A304540 * A304542 A304543 A304544

Keyword

nonn

Author

R. H. Hardin, May 14 2018

Status

approved