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A252218
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Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 5 6 or 7
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1
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14627, 47580, 420596, 3410786, 27565870, 225314934, 1834743852, 14935638689, 121853394501, 993165752194, 8089640891856, 65918907448848, 537257266754775, 4378309348730447, 35677643317164637, 290732203739079765
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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
..2..3..3..3..3..3..3..3..3....2..1..1..1..1..1..1..2..1
..3..3..3..2..3..3..3..3..3....1..1..1..1..2..1..1..1..1
..3..3..3..3..3..2..3..3..2....1..1..1..1..1..1..1..1..2
..3..3..2..3..3..3..3..2..3....1..1..1..1..1..1..1..2..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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