A305691 Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

8, 5824, 453553, 47448563, 4791219558, 484920924010, 49083436693252, 4968168200482612, 502868587709213674, 50899470674105259942, 5151954783888699806976, 521471776409885375274986

Offset

1,1

Comments

Column 7 of A305692.

Links

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

Example

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

Crossrefs

Cf. A305692.

Sequence in context: A316281 A305960 A317221 * A317071 A316952 A317732

Adjacent sequences: A305688 A305689 A305690 * A305692 A305693 A305694

Keyword

nonn

Author

R. H. Hardin, Jun 08 2018

Status

approved