A317152 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

64, 752, 4091, 49746, 786868, 8398085, 100639070, 1322153771, 16079639203, 197080980236, 2478248260746, 30736946463877, 380701037947962, 4743575989254534, 58981199987184372, 732782748455024292

Offset

1,1

Comments

Column 7 of A317153.

Links

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

Example

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

Crossrefs

Cf. A317153.

Sequence in context: A305641 A317035 A305910 * A316882 A317610 A264260

Adjacent sequences: A317149 A317150 A317151 * A317153 A317154 A317155

Keyword

nonn

Author

R. H. Hardin, Jul 22 2018

Status

approved