A305019 Number of nX5 0..1 arrays with every element unequal to 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

0, 61, 387, 6742, 101178, 1575677, 24498639, 380995482, 5926730196, 92211738808, 1434545885081, 22318674073984, 347229371088302, 5402134371252384, 84045598929827406, 1307567768384242488, 20342933954502637478

Offset

1,2

Comments

Column 5 of A305022.

Links

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

Example

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

Crossrefs

Cf. A305022.

Sequence in context: A304062 A305454 A266134 * A316683 A264845 A340159

Adjacent sequences: A305016 A305017 A305018 * A305020 A305021 A305022

Keyword

nonn

Author

R. H. Hardin, May 23 2018

Status

approved