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A251997
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Number of (n+2)X(5+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 4 5 or 7
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1
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2708560, 308552418, 39474106776, 5058864059512, 648649767997560, 83204478074887540, 10674144780289546954, 1369370682559455572124, 175674752635044616011278, 22537093202446356860490010
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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..3..3..0....0..0..0..0..0..3..0....0..0..0..0..0..3..3
..0..0..0..3..3..3..0....3..0..3..0..3..0..0....3..3..0..0..3..0..3
..0..3..0..0..0..0..3....0..3..3..0..0..0..3....0..0..3..3..0..3..3
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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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