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A251811
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Number of (n+2)X(n+2) 0..2 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime
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0
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345, 538, 1754, 22922, 504148, 17562309, 937980816, 77093723774, 9818091214983, 1923038551366940, 579363831610999841, 269256446506102900848, 192945586040744107579841, 212997867807414690141275523
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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=3
..0..1..1..0..1....1..0..2..0..0....1..1..0..1..1....1..0..2..0..0
..1..1..1..1..1....1..0..1..1..0....2..1..2..2..1....2..1..2..2..1
..1..1..1..1..1....1..2..2..1..2....2..0..0..2..0....0..1..1..0..1
..0..1..1..1..0....0..0..2..0..0....1..1..0..1..1....0..0..2..0..1
..1..1..0..1..1....1..0..1..1..0....2..1..2..2..1....2..1..2..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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