A297600 Number of 7Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1 or 5 neighboring 1s.

1, 178, 1701, 6962, 93150, 1172288, 9403199, 85828150, 919035936, 8853487049, 82411356392, 809231737581, 7936987592888, 76162052363914, 735775369925651, 7159378085264000, 69324523431873026, 670205953180878528

Offset

1,2

Comments

Row 7 of A297595.

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

Crossrefs

Cf. A297595.

Sequence in context: A224600 A279093 A297400 * A296824 A297588 A189440

Adjacent sequences: A297597 A297598 A297599 * A297601 A297602 A297603

Keyword

nonn

Author

R. H. Hardin, Jan 01 2018

Status

approved