A296308 Number of n X n 0..1 arrays with each 1 adjacent to 3 or 6 king-move neighboring 1's.

1, 2, 5, 10, 68, 479, 3300, 49634, 1039840, 24795120, 980896445, 69526855808

Offset

1,2

Comments

Diagonal of A296313.

Links

Table of n, a(n) for n=1..12.

Example

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

Crossrefs

Cf. A296313.

Sequence in context: A018549 A053356 A018584 * A018603 A018615 A082842

Adjacent sequences: A296305 A296306 A296307 * A296309 A296310 A296311

Keyword

nonn

Author

R. H. Hardin, Dec 10 2017

Status

approved