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A251910
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Number of (n+2)X(1+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 or 7
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1
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49436, 950384, 18245824, 351040004, 6755376172, 130017259448, 2502492993696, 48167226337576, 927113629971008, 17844946696018556, 343477167921733468, 6611204871172789048, 127251643536600580376, 2449323790014472880500
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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
..3..0..0....2..1..1....2..2..1....0..2..1....0..1..2....3..2..3....2..1..3
..0..3..0....1..2..3....2..3..1....1..0..2....0..3..2....3..3..2....1..0..3
..3..2..0....0..1..0....0..3..3....0..2..1....3..0..2....0..1..0....2..2..2
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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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