A305521 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

32, 2048, 68603, 2102155, 66949063, 2122076804, 67425576120, 2143769629842, 68172646692968, 2168401071221921, 68974486652205867, 2194111059481734303, 69796733046371194006, 2220322980877280334126, 70631601099061814360473

Offset

1,1

Comments

Column 6 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..1..1. .0..0..1..1..1..0. .0..0..1..0..0..1
..0..0..0..1..1..1. .0..0..1..1..0..0. .0..0..0..1..0..0. .0..0..0..1..0..0
..0..0..0..0..1..0. .0..0..1..1..1..0. .0..0..1..1..0..1. .0..0..1..1..1..1
..0..0..0..1..0..1. .0..0..0..1..1..0. .0..0..0..1..1..0. .0..0..1..1..1..1
..0..0..1..1..0..0. .0..0..1..0..0..1. .0..0..0..0..0..0. .0..0..0..1..0..1

Crossrefs

Cf. A305523.

Sequence in context: A302812 A303473 A208713 * A316958 A316813 A320369

Adjacent sequences: A305518 A305519 A305520 * A305522 A305523 A305524

Keyword

nonn

Author

R. H. Hardin, Jun 04 2018

Status

approved