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A196910
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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 3,1,2,0,4 for x=0,1,2,3,4
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1
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9, 199, 2843, 45491, 733802, 12186565, 200038888, 3288093050, 54146489903, 891524201851, 14679971940400, 241775144671286, 3982212408210114, 65590626468018714, 1080350655220465627, 17794687292056874401
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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 3's, every 1 is next to 1 1's, every 2 is next to 2 2's, every 3 is next to 3 0'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
..1..0..1..0..1..1....0..0..1..1..0..0....0..0..2..2..0..1....1..1..0..1..1..0
..1..0..1..0..2..2....0..0..0..0..0..0....0..0..2..2..0..1....2..2..0..0..2..2
..0..1..0..0..2..2....1..1..2..2..1..0....2..2..0..0..0..0....2..2..0..1..2..2
..0..1..0..0..1..1....0..0..2..2..1..0....2..2..0..1..1..0....1..1..0..1..0..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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