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A252051
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Number of (n+2)X(6+2) 0..3 arrays with every 3X3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8
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1
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7642, 10324, 17166, 29180, 112542, 233342, 398502, 1545586, 3493324, 6364926, 25030764, 55982864, 107529180, 434690496, 981158992, 1847050606, 7975660404, 17661934362, 33398453950, 148936808798, 330139202194, 605355952468
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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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FORMULA
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Empirical recurrence of order 71 (see link above)
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EXAMPLE
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Some solutions for n=4
..0..1..1..0..3..2..2..1....2..1..2..1..2..1..2..1....3..1..1..3..1..1..0..1
..0..0..2..2..1..1..3..0....0..1..3..1..0..1..3..1....1..2..2..1..2..2..1..2
..2..1..1..3..0..2..2..1....3..2..0..2..3..2..0..2....0..1..1..3..1..1..3..1
..0..3..2..2..1..1..0..3....1..2..1..2..1..2..1..2....3..1..1..0..1..1..3..1
..2..1..1..0..3..2..2..1....1..0..1..3..1..3..1..3....1..2..2..1..2..2..1..2
..3..0..2..2..1..1..0..3....2..0..2..0..2..0..2..0....0..1..1..3..1..1..3..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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