A316732 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

1, 99, 40, 25, 337, 42, 275, 6652, 3399, 8908, 160954, 203593, 486192, 4585409, 9222281, 23994611, 147546594, 384343255, 1092999534, 5199834676, 15601374407, 47419625605, 194578898512, 628086581739, 1998254845643, 7549906242628

Offset

1,2

Comments

Column 7 of A316733.

Links

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

Example

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

Crossrefs

Cf. A316733.

Sequence in context: A360376 A304140 A305046 * A033419 A110397 A298509

Adjacent sequences: A316729 A316730 A316731 * A316733 A316734 A316735

Keyword

nonn

Author

R. H. Hardin, Jul 11 2018

Status

approved