A305951 Number of nX5 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

1, 82, 537, 8433, 126733, 1969026, 30700722, 480588948, 7529843048, 118052028459, 1851213087039, 29032849490255, 455349084440322, 7141827767035357, 112015712249621860, 1756914652912131144, 27556457183669006842

Offset

1,2

Comments

Column 5 of A305954.

Links

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

Example

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

Crossrefs

Cf. A305954.

Sequence in context: A288920 A304416 A316241 * A317212 A282773 A182277

Adjacent sequences: A305948 A305949 A305950 * A305952 A305953 A305954

Keyword

nonn

Author

R. H. Hardin, Jun 15 2018

Status

approved