A304694 Number of nX5 0..1 arrays with every element unequal to 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

3, 120, 669, 4910, 37050, 263381, 1894297, 13791026, 99838011, 723141636, 5242242192, 38000913259, 275443591763, 1996621786317, 14473789984416, 104921152690890, 760577267171391, 5513516936878546, 39968166811319574

Offset

1,1

Comments

Column 5 of A304697.

Links

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

Example

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

Crossrefs

Cf. A304697.

Sequence in context: A304956 A316638 A227480 * A316445 A316127 A317433

Adjacent sequences: A304691 A304692 A304693 * A304695 A304696 A304697

Keyword

nonn

Author

R. H. Hardin, May 17 2018

Status

approved