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A252455
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Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 4 6 or 7
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1
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3938, 20242, 134907, 863351, 5596619, 36760486, 240708592, 1577703429, 10367458379, 68072122171, 446783070387, 2933845046205, 19268013875675, 126527744827003, 830860795856980, 5456160445875431, 35830272826754996
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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
..2..3..3..3..2..3..3..3....3..3..3..2..3..3..2..3....2..3..3..3..3..3..3..2
..3..3..3..3..3..3..3..3....2..3..3..3..3..3..3..3....3..3..3..3..3..3..3..3
..3..3..3..3..3..2..3..3....3..3..3..3..3..3..3..3....3..3..3..2..3..3..3..3
..3..3..3..3..3..3..3..2....3..3..3..3..3..2..3..3....3..3..3..3..3..3..3..2
..3..3..2..3..3..3..2..3....3..2..3..3..3..3..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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