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A230749
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Number of (n+3)X(n+3) 0..2 arrays x(i,j) with each element diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero
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0
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12, 5544, 13305708, 116879941620, 5769362600920812, 1504181314566629793432, 2135728868490621147879828300, 16459977111484024315408273362622152, 689468967599129606177339374031370776847408
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=1
..0..0..0..0....0..2..2..0....0..2..2..2....0..2..0..0....0..0..2..0
..2..1..1..2....0..1..1..0....1..1..0..0....0..1..1..2....2..1..1..0
..2..1..1..2....0..1..1..0....0..0..1..1....2..1..1..0....0..1..1..2
..0..0..0..0....0..2..2..0....2..2..2..0....0..0..2..0....0..2..0..0
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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