A316614 Number of n X 7 0..1 arrays with every element unequal to 0, 1, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

21, 237, 245, 1074, 4719, 17224, 65158, 261426, 990387, 3768844, 14720334, 56653017, 217036116, 839438654, 3238254715, 12452927964, 48026433042, 185228062557, 713410490056, 2749613319152, 10600692230546, 40849824445421

Offset

1,1

Comments

Column 7 of A316615.

Links

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

Example

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

Crossrefs

Cf. A316615.

Sequence in context: A303968 A304930 A305346 * A304668 A306171 A316426

Adjacent sequences: A316611 A316612 A316613 * A316615 A316616 A316617

Keyword

nonn

Author

R. H. Hardin, Jul 08 2018

Status

approved