A300378 Number of nX6 0..1 arrays with every element equal to 0, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 42, 58, 237, 1351, 8839, 53367, 330577, 2105279, 13511213, 85977238, 547636965, 3502829714, 22360278474, 142764723618, 911920520092, 5824257883326, 37198229320503, 237578872389910, 1517410190488149, 9691572674890208

Offset

1,2

Comments

Column 6 of A300380.

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..0..1..0. .0..0..0..0..0..1. .0..1..1..1..1..0
..0..1..1..1..1..0. .1..1..0..1..1..1. .0..1..1..0..1..1. .1..0..0..1..1..1
..1..0..0..0..0..0. .0..0..1..0..0..1. .1..1..0..1..0..0. .1..0..0..0..0..1
..1..0..1..1..1..0. .0..1..0..1..0..1. .0..0..1..0..1..0. .1..1..1..0..1..0
..1..1..0..1..0..0. .1..1..0..0..1..1. .0..1..1..0..0..0. .1..0..1..1..0..0

Crossrefs

Cf. A300380.

Sequence in context: A039384 A043207 A043987 * A300680 A053323 A363730

Adjacent sequences: A300375 A300376 A300377 * A300379 A300380 A300381

Keyword

nonn

Author

R. H. Hardin, Mar 04 2018

Status

approved