A305522 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

64, 8192, 466858, 23747613, 1269418258, 67425576120, 3592436519091, 191577652761963, 10218588450186728, 545224050326670079, 29092517827360869418, 1552454485592778642802, 82844647343060190173654

Offset

1,1

Comments

Column 7 of A305523.

Links

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

Example

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

Crossrefs

Cf. A305523.

Sequence in context: A302074 A302813 A303474 * A208714 A316959 A316814

Adjacent sequences: A305519 A305520 A305521 * A305523 A305524 A305525

Keyword

nonn

Author

R. H. Hardin, Jun 04 2018

Status

approved