A296151 Number of n X n 0..1 arrays with each 1 adjacent to 3 or 5 king-move neighboring 1's.

1, 2, 9, 32, 341, 5171, 108933, 4342381, 296784399, 37129976859

Offset

1,2

Comments

Diagonal of A296157.

Links

Table of n, a(n) for n=1..10.

Example

Some solutions for n=7
..0..0..0..1..1..1..1. .1..1..1..1..1..0..0. .1..1..1..0..0..0..0
..1..1..0..1..1..1..1. .1..1..1..1..1..0..0. .1..1..1..0..1..1..0
..1..1..0..0..0..0..0. .0..0..0..0..0..0..0. .0..0..0..0..1..1..0
..0..0..0..0..0..0..0. .0..1..0..1..1..0..0. .0..1..1..0..0..0..0
..1..1..0..0..0..1..1. .1..1..1..0..1..1..0. .0..1..1..0..0..0..0
..1..1..0..0..0..1..1. .0..1..1..0..1..1..1. .0..1..1..0..1..1..1
..1..1..0..0..0..1..1. .0..0..1..1..0..1..0. .0..0..0..0..1..1..1

Crossrefs

Cf. A296157.

Sequence in context: A110376 A335577 A338437 * A036505 A264234 A056916

Adjacent sequences: A296148 A296149 A296150 * A296152 A296153 A296154

Keyword

nonn

Author

R. H. Hardin, Dec 06 2017

Status

approved