A317610 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

64, 752, 4708, 64593, 1160029, 17100005, 271661553, 4668181991, 80648172452, 1396559252995, 24643342111164, 438424811068310, 7799061411116940, 139398646047700432, 2497946121406633004, 44761291598862514738

Offset

1,1

Comments

Column 7 of A317611.

Links

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

Example

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

Crossrefs

Cf. A317611.

Sequence in context: A305910 A317152 A316882 * A264260 A190532 A181889

Adjacent sequences: A317607 A317608 A317609 * A317611 A317612 A317613

Keyword

nonn

Author

R. H. Hardin, Aug 01 2018

Status

approved