A281709 Number of n X n 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.

1, 3, 8, 97, 937, 29849, 1721319, 178547832, 41247350230, 17968646792801

Offset

1,2

Comments

Diagonal of A281715.

Links

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

Example

Some solutions for n=4
..0..0..0..0. .0..1..0..1. .0..0..1..0. .0..0..1..1. .0..0..0..1
..0..0..1..1. .1..0..1..0. .0..1..0..1. .1..1..0..0. .1..1..1..0
..0..1..1..1. .1..1..0..1. .1..0..1..0. .1..1..0..0. .1..1..0..0
..0..0..1..1. .1..1..1..0. .0..1..0..1. .1..1..0..0. .1..0..0..0

Crossrefs

Cf. A281715.

Sequence in context: A069703 A114737 A233163 * A099296 A066619 A028504

Adjacent sequences: A281706 A281707 A281708 * A281710 A281711 A281712

Keyword

nonn

Author

R. H. Hardin, Jan 28 2017

Status

approved