A317064 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.

1, 908, 29339, 2403703, 186574154, 14920072888, 1197129513001, 96317261216226, 7756014658872472, 624809763949119909, 50341640351921902734, 4056352364979422842728, 326855659057553202836776

Offset

1,2

Comments

Column 7 of A317065.

Links

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

Example

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

Crossrefs

Cf. A317065.

Sequence in context: A305953 A317214 A305684 * A316931 A317702 A214001

Adjacent sequences: A317061 A317062 A317063 * A317065 A317066 A317067

Keyword

nonn

Author

R. H. Hardin, Jul 20 2018

Status

approved