A305774 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.

32, 569, 4172, 38623, 362200, 3492739, 33891076, 329477646, 3206311981, 31221147593, 304079486283, 2961660465756, 28846996288795, 280978948410575, 2736828664561312, 26657663269633560, 259655448460324811

Offset

1,1

Comments

Column 6 of A305776.

Links

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

Example

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

Crossrefs

Cf. A305776.

Sequence in context: A220631 A304308 A316207 * A317123 A305591 A317009

Adjacent sequences: A305771 A305772 A305773 * A305775 A305776 A305777

Keyword

nonn

Author

R. H. Hardin, Jun 10 2018

Status

approved