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A252320
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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 1 3 6 or 7
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1
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56052, 25875, 214325, 1741936, 14105723, 115183853, 937981280, 7634090167, 62282796267, 507708324342, 4135550419263, 33696297343761, 274629581667992, 2238121992115863, 18238035152920308, 148617809035822492
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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....3..3..3..3..2..3..3..3..2
..3..3..3..3..3..3..3..3..2....3..2..3..3..3..3..3..3..3
..3..3..3..2..3..3..3..3..3....3..3..3..3..3..3..3..2..3
..2..3..3..3..3..3..3..2..3....3..3..3..3..3..3..3..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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