A296032 Number of n X n 0..1 arrays with each 1 adjacent to 2 or 4 king-move neighboring 1's.

1, 5, 31, 204, 8472, 472540, 39608385, 10042412853, 5131681923323, 4854151578229861, 10472350366798925062

Offset

1,2

Comments

Diagonal of A296039.

Links

Table of n, a(n) for n=1..11.

Example

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

Crossrefs

Cf. A296039.

Sequence in context: A349301 A288688 A002469 * A301420 A359713 A092636

Adjacent sequences: A296029 A296030 A296031 * A296033 A296034 A296035

Keyword

nonn

Author

R. H. Hardin, Dec 03 2017

Status

approved