A305527 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.

16, 420, 4779, 61139, 767417, 9599897, 120736482, 1516911265, 19047231319, 239296544073, 3006001064287, 37759220717254, 474325856668925, 5958345162521726, 74846763031519350, 940204050723933820

Offset

1,1

Comments

Column 5 of A305530.

Links

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

Example

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

Crossrefs

Cf. A305530.

Sequence in context: A316180 A305766 A317115 * A317001 A316819 A317569

Adjacent sequences: A305524 A305525 A305526 * A305528 A305529 A305530

Keyword

nonn

Author

R. H. Hardin, Jun 04 2018

Status

approved