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A231434
Number of (n+2)X(n+2) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order
0
1, 4, 21, 182, 4450, 133646, 7859324
OFFSET
1,2
COMMENTS
Diagonal of A231441
EXAMPLE
Some solutions for n=5
..0..0..1..1..1..1..1....0..0..1..1..1..0..0....0..0..1..1..2..2..2
..0..0..1..1..1..1..1....0..0..1..1..1..0..0....0..0..1..1..2..2..2
..0..0..0..1..1..1..1....0..0..1..1..1..1..0....0..0..0..1..1..2..2
..0..0..0..1..1..1..1....0..0..1..1..1..1..0....0..0..0..1..1..3..3
..1..1..1..0..0..0..0....0..0..0..1..1..0..0....0..0..0..1..3..3..3
..1..1..1..0..0..0..0....0..0..0..0..0..0..0....0..0..1..1..3..3..3
..1..1..1..0..0..0..0....0..0..0..0..0..0..0....0..0..1..1..3..3..3
CROSSREFS
Sequence in context: A306067 A230682 A231220 * A221370 A224500 A158108
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 09 2013
STATUS
approved