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A203395
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Number of nX6 0..3 arrays with every nonzero element less than or equal to some NW, E or S neighbor
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1
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1, 83876, 163500122, 156174348536, 146110498224967, 149902909246835321, 154961643794311169996, 158148980522829167340325, 161146544980100852067260986, 164476130276533308144689941035
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=4
..2..2..0..2..3..0....1..3..0..2..3..2....3..0..1..3..2..0....0..2..3..1..1..0
..3..2..0..1..3..1....1..3..3..3..3..3....3..3..3..3..3..0....0..2..3..0..2..2
..3..3..2..1..3..2....1..2..0..1..3..2....0..3..0..3..2..1....0..0..3..2..3..2
..3..3..0..1..3..3....0..2..2..1..1..0....0..2..2..3..3..0....1..1..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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