A305910 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

64, 752, 3534, 40412, 505624, 4408093, 42789430, 473649265, 4825821471, 48835572429, 515686964327, 5401212916943, 56155450958998, 589682890512978, 6202400369157255, 65116511416512053, 685031719571107911

Offset

1,1

Comments

Column 7 of A305911.

Links

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

Example

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

Crossrefs

Cf. A305911.

Sequence in context: A316217 A305641 A317035 * A317152 A316882 A317610

Adjacent sequences: A305907 A305908 A305909 * A305911 A305912 A305913

Keyword

nonn

Author

R. H. Hardin, Jun 14 2018

Status

approved