A317010 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

64, 1709, 31328, 639838, 12838095, 263269309, 5395769696, 110527120611, 2265876477133, 46456304124936, 952534294337069, 19531323166546453, 400491270921800716, 8212181804137074107, 168393873326137649871

Offset

1,1

Comments

Column 7 of A317011.

Links

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

Example

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

Crossrefs

Cf. A317011.

Sequence in context: A305775 A317124 A305592 * A316875 A317603 A269660

Adjacent sequences: A317007 A317008 A317009 * A317011 A317012 A317013

Keyword

nonn

Author

R. H. Hardin, Jul 18 2018

Status

approved