A303629 Number of 7Xn 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 21, 10288, 62207, 4288358, 122517773, 6323564388, 290118140045, 14717695448165, 745702210079702, 38382642404113793, 1985085140054551129, 102986990515395922403, 5353920883901539271717, 278582161093558674832024

Offset

1,1

Comments

Row 7 of A303624.

Links

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

Example

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

Crossrefs

Cf. A303624.

Sequence in context: A302373 A303089 A302894 * A302520 A302685 A281721

Adjacent sequences: A303626 A303627 A303628 * A303630 A303631 A303632

Keyword

nonn

Author

R. H. Hardin, Apr 27 2018

Status

approved