A300768 Number of nX7 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

8, 223, 611, 2042, 7353, 28397, 112573, 451977, 1825793, 7399711, 30171808, 123052105, 502913614, 2059649664, 8452421368, 34740533882, 142943151855, 588556514012, 2424582989132, 9992269129124, 41193493866434, 169864713001219

Offset

1,1

Comments

Column 7 of A300769.

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

Crossrefs

Cf. A300769.

Sequence in context: A179122 A300349 A300434 * A300638 A301360 A267235

Adjacent sequences: A300765 A300766 A300767 * A300769 A300770 A300771

Keyword

nonn

Author

R. H. Hardin, Mar 12 2018

Status

approved