A316639 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

5, 333, 1344, 9773, 85222, 684269, 5879970, 50360206, 428319949, 3674375963, 31500882914, 269759007869, 2312231101195, 19820061601337, 169853073919389, 1455814567670817, 12477915004284634, 106944514066842361

Offset

1,1

Comments

Column 6 of A316641.

Links

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

Example

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

Crossrefs

Cf. A316641.

Sequence in context: A304017 A305365 A304957 * A304695 A316446 A316128

Adjacent sequences: A316636 A316637 A316638 * A316640 A316641 A316642

Keyword

nonn

Author

R. H. Hardin, Jul 09 2018

Status

approved