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A206793
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Number of nX4 0..3 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal
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1
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232, 53824, 8683735, 1382766472, 222851712982, 35954795295641, 5798927126392378, 935195769843015103, 150819269855143535380, 24322790361067935901218, 3922570242526007854435915
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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
..0..2..2..1....2..2..1..0....1..0..2..1....1..0..3..2....1..3..2..1
..1..0..1..1....3..2..2..0....0..1..1..2....1..1..0..0....1..2..2..1
..2..2..1..0....3..3..3..0....2..1..0..3....3..1..3..0....0..2..0..3
..0..3..0..1....1..3..3..3....1..0..1..1....1..0..1..3....0..0..2..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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