A300680 Number of nX6 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

1, 42, 58, 245, 1382, 9015, 54361, 338173, 2152660, 13818749, 88065216, 561506884, 3594611840, 22972741078, 146835080662, 938877932315, 6002943788616, 38380680312986, 245393290686015, 1569003851769309, 10031859337955923

Offset

1,2

Comments

Column 6 of A300682.

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

Crossrefs

Cf. A300682.

Sequence in context: A043207 A043987 A300378 * A053323 A363730 A248441

Adjacent sequences: A300677 A300678 A300679 * A300681 A300682 A300683

Keyword

nonn

Author

R. H. Hardin, Mar 11 2018

Status

approved