A303240 Number of nX6 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

1, 65, 56, 149, 1373, 7823, 41878, 277018, 1721671, 10607292, 67278868, 424616777, 2676699369, 16945268476, 107280325551, 679285054896, 4304451618590, 27282048865071, 172940738855024, 1096476824922147, 6952546132868710

Offset

1,2

Comments

Column 6 of A303242.

Links

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

Example

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

Crossrefs

Cf. A303242.

Sequence in context: A297941 A298552 A302458 * A298725 A299559 A374287

Adjacent sequences: A303237 A303238 A303239 * A303241 A303242 A303243

Keyword

nonn

Author

R. H. Hardin, Apr 20 2018

Status

approved