A316756 Number of nX7 0..1 arrays with every element unequal to 1, 2, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 168, 315, 295, 4397, 23857, 58615, 399831, 2330661, 8452508, 43422677, 244219167, 1085667753, 5198650416, 27357344048, 132450119759, 633779549006, 3192101777945, 15861698093325, 76966813423383, 380116339135931

Offset

1,1

Comments

Column 7 of A316757.

Links

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

Example

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

Crossrefs

Cf. A316757.

Sequence in context: A267205 A305096 A032395 * A294512 A090228 A220808

Adjacent sequences: A316753 A316754 A316755 * A316757 A316758 A316759

Keyword

nonn

Author

R. H. Hardin, Jul 12 2018

Status

approved