A302426 Number of nX7 0..1 arrays with every element equal to 0, 1, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

21, 185, 188, 532, 4223, 14764, 48037, 227283, 940829, 3489620, 14387459, 59418248, 233645986, 941269019, 3823009297, 15290825815, 61530089164, 248256753643, 996694292892, 4011733223504, 16159420719685, 64946192160119

Offset

1,1

Comments

Column 7 of A302427.

Links

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

Example

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

Crossrefs

Cf. A302427.

Sequence in context: A232045 A302162 A302634 * A303196 A274655 A274653

Adjacent sequences: A302423 A302424 A302425 * A302427 A302428 A302429

Keyword

nonn

Author

R. H. Hardin, Apr 07 2018

Status

approved