A318427 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

3, 160, 417, 3999, 19645, 132039, 774731, 4831925, 29346956, 180397992, 1102772445, 6762537311, 41387557425, 253614074287, 1552946994059, 9512977716542, 58262276949109, 356861142474708, 2185718698633733

Offset

1,1

Comments

Column 5 of A318430.

Links

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

Example

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

Crossrefs

Cf. A318430.

Sequence in context: A281799 A163320 A317820 * A318095 A108159 A201429

Adjacent sequences: A318424 A318425 A318426 * A318428 A318429 A318430

Keyword

nonn

Author

R. H. Hardin, Aug 26 2018

Status

approved