A317524 Number of n X 7 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

64, 8192, 894961, 97158833, 10610584063, 1158965686460, 126590463179356, 13827306338404344, 1510339799594487635, 164972591056658113828, 18019757486453802693942, 1968276424085056969100538

Offset

1,1

Comments

Column 7 of A317525.

Links

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

Example

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

Crossrefs

Cf. A317525.

Sequence in context: A301783 A213417 A316807 * A299653 A300207 A303420

Adjacent sequences: A317521 A317522 A317523 * A317525 A317526 A317527

Keyword

nonn

Author

R. H. Hardin, Jul 30 2018

Status

approved