A230062 Number of n X n 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value 2-x(i,j)

0, 9, 45, 15129, 14082255, 114228452529, 5392746297039195, 1669550033290419884241, 3264068813720842706362349013, 40741287160388602906800646716513609

Offset

1,2

Comments

Diagonal of A230068

Links

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

Example

Some solutions for n=4
..2..1..1..1....0..2..2..2....2..0..2..1....2..1..1..0....1..0..0..1
..1..0..1..1....0..2..0..0....2..0..1..2....1..0..2..1....2..1..1..2
..1..0..2..1....2..0..2..2....0..1..0..1....2..0..1..2....2..2..1..0
..2..1..1..0....2..0..2..0....1..2..1..2....2..0..0..1....0..0..2..1

Crossrefs

Sequence in context: A261847 A050909 A333306 * A224851 A042003 A117052

Adjacent sequences: A230059 A230060 A230061 * A230063 A230064 A230065

Keyword

nonn

Author

R. H. Hardin, Oct 08 2013

Status

approved