A317694 Number of nX5 0..1 arrays with every element unequal to 0, 1, 3, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 57, 92, 630, 6984, 45681, 464357, 6124074, 64822432, 715570927, 8654654634, 99958524334, 1144612247874, 13435519306133, 156803930124482, 1819334495186908, 21222619198848095, 247618983949298444

Offset

1,1

Comments

Column 5 of A317697.

Links

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

Example

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

Crossrefs

Cf. A317697.

Sequence in context: A305646 A316922 A317040 * A143570 A365303 A296721

Adjacent sequences: A317691 A317692 A317693 * A317695 A317696 A317697

Keyword

nonn

Author

R. H. Hardin, Aug 04 2018

Status

approved