A304853 Number of nX6 0..1 arrays with every element unequal to 0, 1, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

13, 61, 51, 127, 334, 762, 2073, 6400, 19099, 57502, 177379, 558534, 1737485, 5396418, 16881862, 52949556, 165823511, 519268185, 1628313741, 5107900592, 16016193328, 50222648697, 157524010692, 494102289013, 1549736631180

Offset

1,1

Comments

Column 6 of A304855.

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

Crossrefs

Cf. A304855.

Sequence in context: A219925 A228282 A303806 * A343538 A305250 A304542

Adjacent sequences: A304850 A304851 A304852 * A304854 A304855 A304856

Keyword

nonn

Author

R. H. Hardin, May 19 2018

Status

approved