A296945 Number of n X n 0..1 arrays with each 1 adjacent to 1, 3 or 5 king-move neighboring 1's.

1, 8, 45, 620, 37179, 2640993, 482228052, 246430289779, 233010334725043, 513658708035556281

Offset

1,2

Comments

Diagonal of A296952.

Links

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

Example

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

Crossrefs

Cf. A296952.

Sequence in context: A306047 A110348 A336999 * A328198 A340975 A213132

Adjacent sequences: A296942 A296943 A296944 * A296946 A296947 A296948

Keyword

nonn

Author

R. H. Hardin, Dec 22 2017

Status

approved