A305690 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

5, 1493, 61796, 3346848, 175572754, 9226209199, 484920924010, 25486278629503, 1339494303168987, 70400464192916736, 3700072426529501978, 194466552461722063621, 10220675610170124068561, 537173147205637872687352

Offset

1,1

Comments

Column 6 of A305692.

Links

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

Example

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

Crossrefs

Cf. A305692.

Sequence in context: A316280 A305959 A317220 * A317070 A316951 A317731

Adjacent sequences: A305687 A305688 A305689 * A305691 A305692 A305693

Keyword

nonn

Author

R. H. Hardin, Jun 08 2018

Status

approved