A316646 Number of nX6 0..1 arrays with every element unequal to 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

5, 165, 247, 954, 13869, 43604, 228056, 1976020, 9093873, 51610410, 361362973, 1985497197, 11760202787, 75909662200, 448886626784, 2721480635319, 17080156724712, 103985805258335, 638132195692524, 3970731506103798

Offset

1,1

Comments

Column 6 of A316648.

Links

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

Example

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

Crossrefs

Cf. A316648.

Sequence in context: A304702 A316453 A305013 * A316174 A317456 A203185

Adjacent sequences: A316643 A316644 A316645 * A316647 A316648 A316649

Keyword

nonn

Author

R. H. Hardin, Jul 09 2018

Status

approved