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A251908
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Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 4 or 5
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1
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910694, 31829596, 1346875728, 55159959296, 2346358649878, 101807826393734, 4420398895384686, 192602542367733540, 8418267573435319288, 368433628593845084758, 16142671439953491545132, 707955307957030465592450
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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
..1..1..1..1..1....1..1..1..1..1....1..1..3..1..1....1..1..1..1..1
..1..1..1..1..3....1..1..1..1..1....1..1..1..1..3....3..1..1..1..1
..1..1..1..3..1....1..3..1..1..1....1..1..1..3..1....1..1..3..1..1
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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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