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A231220
Number of (n+2)X(n+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order
0
1, 4, 21, 182, 4298, 117178, 5930126, 495739986
OFFSET
1,2
COMMENTS
Diagonal of A231227
EXAMPLE
Some solutions for n=4
..0..0..0..0..0..0....0..0..0..1..1..1....0..0..0..0..1..1....0..0..0..1..1..1
..0..0..1..1..0..0....0..0..0..1..1..1....0..0..0..0..1..1....0..0..0..1..1..1
..1..1..1..1..1..1....1..1..1..0..0..0....0..0..0..0..1..1....0..0..1..1..1..1
..1..1..1..1..1..1....1..1..1..0..0..0....0..0..0..0..1..1....1..1..1..1..1..1
..2..2..2..2..2..2....0..0..0..1..1..1....0..0..0..0..1..1....1..1..1..1..1..1
..2..2..2..2..2..2....0..0..0..1..1..1....0..0..0..0..1..1....1..1..1..1..1..1
CROSSREFS
Sequence in context: A278993 A306067 A230682 * A231434 A221370 A224500
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 05 2013
STATUS
approved