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A223131
Number of 6Xn 0..2 arrays with no more than floor(6Xn/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..2 order
0
122, 47968, 18539512, 7157970340, 2785187722316, 1092037282618789, 431398785877769642, 171546088917546382811, 68597654261623347505569, 27560231488082950954805851
OFFSET
1,1
COMMENTS
Row 6 of A223126
EXAMPLE
Some solutions for n=3
..0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..1..0....0..0..1....0..0..1....0..1..0....0..0..0....0..1..0....0..1..0
..0..1..2....1..2..0....1..0..2....0..1..2....1..2..1....0..2..0....0..2..1
..0..1..0....0..1..2....2..1..0....0..0..2....0..2..0....1..2..0....0..1..0
..2..1..0....2..1..0....2..0..1....0..0..2....1..2..1....2..2..0....1..2..0
..1..2..2....1..2..2....2..0..2....2..1..0....1..1..0....2..1..0....1..2..1
CROSSREFS
Sequence in context: A233080 A280678 A209105 * A208256 A198714 A199653
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 15 2013
STATUS
approved