A305365 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.

5, 333, 943, 5465, 32765, 179644, 1113793, 6595796, 39677540, 241971927, 1464024977, 8913650834, 54269187889, 330301566873, 2012653511729, 12260934504511, 74704834307297, 455234824361587, 2773994928611297

Offset

1,1

Comments

Column 6 of A305367.

Links

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

Example

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

Crossrefs

Cf. A305367.

Sequence in context: A292687 A152425 A304017 * A304957 A316639 A304695

Adjacent sequences: A305362 A305363 A305364 * A305366 A305367 A305368

Keyword

nonn

Author

R. H. Hardin, May 31 2018

Status

approved