A316952 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

8, 5824, 543155, 65510494, 7779344498, 920789559090, 109086632521219, 12922662872545339, 1530833075194371631, 181344893179752397743, 21482391318884779005263, 2544836644947598957548664

Offset

1,1

Comments

Column 7 of A316953.

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

Crossrefs

Cf. A316953.

Sequence in context: A317221 A305691 A317071 * A317732 A179151 A079189

Adjacent sequences: A316949 A316950 A316951 * A316953 A316954 A316955

Keyword

nonn

Author

R. H. Hardin, Jul 17 2018

Status

approved