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A253484
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Number of (3+1)X(n+1) 0..2 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically
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1
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3888, 85280, 1962374, 44878810, 1028601406, 23553719782, 539599344188, 12359428902608, 283115374994698, 6485039906571714, 148548569346340394, 3402684107566122626, 77942770831566300150, 1785375804378076728772
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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=2
..1..0..0....1..2..2....2..1..1....2..2..2....2..2..1....0..1..2....2..2..2
..1..0..2....1..0..1....2..0..0....1..2..1....0..0..1....0..0..1....0..2..0
..0..1..1....0..2..1....0..2..2....0..2..2....1..1..2....1..1..0....0..0..1
..0..1..2....0..0..1....1..0..2....1..0..1....0..2..0....2..2..2....0..2..0
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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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