A302888 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

1, 496, 2548, 98458, 2727690, 89290791, 2899297652, 94799190457, 3098646840396, 101318692410975, 3312704193964731, 108315993718233338, 3541604337522608162, 115799973010176627546, 3786315710185413419126, 123801313825059497591042

Offset

1,2

Comments

Column 7 of A302889.

Links

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

Example

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

Crossrefs

Cf. A302889.

Sequence in context: A109477 A302366 A303083 * A349699 A303623 A249200

Adjacent sequences: A302885 A302886 A302887 * A302889 A302890 A302891

Keyword

nonn

Author

R. H. Hardin, Apr 15 2018

Status

approved