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A251458
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Number of (n+1) X (7+1) 0..3 arrays with every 2 X 2 subblock summing to a prime.
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1
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20039054, 9883202426, 4606843590302, 2183158464447536, 1028696788230851944, 486569802610722280938, 229687326408274791177808, 108605494730585927438945340, 51299121137631000207920371548
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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..2..2..1..1....0..0..0..2..2..1..0..3....0..0..0..0..3..1..0..2
..0..3..2..3..0..1..1..0....0..3..0..0..1..1..0..2....2..3..2..0..0..1..0..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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