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A207278
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Number of nX3 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row, column, diagonal or antidiagonal
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1
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58, 3364, 121014, 4686270, 181121542, 6979630118, 268686202446, 10346388676890, 398484229526944, 15347093146481576, 591056573797250302, 22763124435331083444, 876670255366683199756, 33762986640905791961506
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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=4
..1..2..2....2..2..1....2..0..1....1..1..0....0..1..1....1..0..2....1..3..2
..1..0..2....1..0..2....0..2..0....3..2..0....3..3..0....1..0..2....3..0..1
..0..3..0....3..3..0....2..1..3....3..0..0....3..1..2....0..2..2....1..1..3
..0..2..1....0..1..1....2..3..1....2..1..3....3..2..1....2..0..3....2..1..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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