A318550 Number of nX6 0..1 arrays with every element unequal to 1, 2, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

5, 46, 106, 589, 3172, 14760, 67976, 337349, 1614708, 7855731, 38347330, 186692330, 911693548, 4447553946, 21721993726, 106065614622, 517953864782, 2529772676696, 12355265537302, 60345961406665, 294745792413259

Offset

1,1

Comments

Column 6 of A318552.

Links

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

Example

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

Crossrefs

Cf. A318552.

Sequence in context: A112396 A317861 A348786 * A318212 A096947 A042533

Adjacent sequences: A318547 A318548 A318549 * A318551 A318552 A318553

Keyword

nonn

Author

R. H. Hardin, Aug 28 2018

Status

approved