A317237 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

64, 432, 1619, 8255, 112675, 995887, 8436662, 83084854, 788831052, 7281591696, 68742470613, 650216368377, 6104984735010, 57455421112954, 541604774316309, 5098791053161630, 48001554324597290, 452093999373189680

Offset

1,1

Comments

Column 7 of A317238.

Links

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

Example

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

Crossrefs

Cf. A317238.

Sequence in context: A316544 A306059 A188785 * A282771 A188821 A181210

Adjacent sequences: A317234 A317235 A317236 * A317238 A317239 A317240

Keyword

nonn

Author

R. H. Hardin, Jul 24 2018

Status

approved