A316217 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

64, 752, 2116, 25093, 242149, 1906841, 17524746, 162191532, 1448194529, 13126514111, 119451232239, 1082554697786, 9818802875496, 89141819392079, 808963524412425, 7341516688308799, 66636867454589760, 604841083740133103

Offset

1,1

Comments

Column 7 of A316218.

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..0. .0..0..1..1..0..0..1. .0..0..0..0..1..0..1
..0..1..0..0..0..1..0. .0..0..1..1..0..0..1. .0..1..0..0..0..1..1
..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..0..1..0. .1..0..0..0..0..0..0. .0..0..0..0..1..1..0
..0..1..0..1..0..0..0. .0..1..0..0..1..1..0. .0..0..1..1..1..1..1

Crossrefs

Cf. A316218.

Sequence in context: A221753 A055867 A304346 * A305641 A317035 A305910

Adjacent sequences: A316214 A316215 A316216 * A316218 A316219 A316220

Keyword

nonn

Author

R. H. Hardin, Jun 26 2018

Status

approved