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A196320
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Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 1,3,0,2,4 for x=0,1,2,3,4
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1
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8, 122, 978, 10934, 120633, 1313940, 14115912, 152443404, 1650437009, 17857068383, 193153331352, 2089258276140, 22599245898201, 244449395062206, 2644153063876181, 28601431700083432, 309377294235234987
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OFFSET
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1,1
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COMMENTS
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Every 0 is next to 0 1's, every 1 is next to 1 3's, every 2 is next to 2 0's, every 3 is next to 3 2's, every 4 is next to 4 4's
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LINKS
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EXAMPLE
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Some solutions for n=4
..0..0..0..0..2..0....0..0..2..0..0..0....0..0..2..0..0..0....0..0..0..0..2..0
..0..0..0..0..3..2....2..3..2..0..0..2....0..2..3..0..2..2....2..2..2..0..3..2
..2..2..2..2..2..0....0..2..0..0..0..2....0..2..2..0..2..0....0..0..2..3..2..0
..0..0..0..0..0..2....0..2..0..2..2..0....2..0..0..0..2..0....0..0..0..2..0..2
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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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