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A230705
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Number of (n+3)X(5+3) 0..2 white square subarrays 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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2
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348, 6576, 130446, 2382398, 43853402, 801845362, 14669811856, 268320990890, 4907081716780, 89741960163156, 1641217724600070, 30014492191668694, 548906193959555044, 10038390389027140378, 183582034355172126804
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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=2
..0..x..2..x..2..x..2..x....0..x..0..x..0..x..1..x....0..x..2..x..2..x..0..x
..x..1..x..0..x..0..x..1....x..1..x..1..x..2..x..0....x..1..x..0..x..1..x..0
..0..x..0..x..1..x..0..x....0..x..2..x..0..x..2..x....0..x..2..x..1..x..1..x
..x..2..x..0..x..2..x..2....x..2..x..0..x..2..x..1....x..2..x..1..x..2..x..0
..1..x..1..x..2..x..1..x....1..x..1..x..1..x..0..x....1..x..0..x..0..x..2..x
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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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