A301360 Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

8, 223, 721, 3961, 30236, 317019, 3241470, 32453379, 325518524, 3277296512, 32998059600, 332730558780, 3358641997163, 33917222682240, 342554924033841, 3459667035375989, 34940683032118738, 352878094225573443

Offset

1,1

Comments

Column 7 of A301361.

Links

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

Example

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

Crossrefs

Cf. A301361.

Sequence in context: A300434 A300768 A300638 * A267235 A230144 A013377

Adjacent sequences: A301357 A301358 A301359 * A301361 A301362 A301363

Keyword

nonn

Author

R. H. Hardin, Mar 19 2018

Status

approved