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A251987
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Number of (n+2)X(3+2) 0..2 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 1 or 5
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1
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151635, 3069283, 79998655, 2351304453, 73509019463, 2356741934027, 76367982838785, 2486060084557113, 81089162155711113, 2647147433243287759, 86447154825290659289, 2823522712519398894329, 92227692059938448409267
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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..2..0..2..2....1..0..2..0..0....0..2..0..2..1....0..0..0..2..2
..0..0..2..2..2....1..2..1..1..2....0..0..0..2..2....0..2..0..0..2
..2..0..2..0..0....0..1..1..1..1....0..0..0..2..1....0..1..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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