A299319 Number of nX6 0..1 arrays with every element equal to 0, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 9, 146, 284, 6051, 44381, 473924, 4898412, 51303757, 560144415, 6042198393, 65973666490, 720410978977, 7878701955428, 86252362060965, 944390263513343, 10344434170986780, 113317722430202816, 1241460522814886751

Offset

1,2

Comments

Column 6 of A299321.

Links

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

Example

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

Crossrefs

Cf. A299321.

Sequence in context: A320333 A178185 A244822 * A241797 A222439 A211106

Adjacent sequences: A299316 A299317 A299318 * A299320 A299321 A299322

Keyword

nonn

Author

R. H. Hardin, Feb 06 2018

Status

approved