A316287 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.

32, 293, 987, 3933, 35706, 205946, 1262767, 8828402, 57330292, 375180988, 2501938442, 16582812390, 109990687793, 731380911782, 4867098029700, 32401669142240, 215828006407143, 1438614282918347, 9592410642470459

Offset

1,1

Comments

Column 6 of A316289.

Links

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

Example

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

Crossrefs

Cf. A316289.

Sequence in context: A304773 A316516 A304470 * A306051 A317228 A250563

Adjacent sequences: A316284 A316285 A316286 * A316288 A316289 A316290

Keyword

nonn

Author

R. H. Hardin, Jun 28 2018

Status

approved