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A232119
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Number of (n+1)X(3+1) 0..2 arrays with every element both >= and <= some horizontal or vertical neighbor
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1
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611, 26029, 1060647, 44229031, 1841606457, 76671235227, 3192300139421, 132915745358065, 5534116036969515, 230420114464294879, 9593840058097695219, 399451969863991106451, 16631700710453882779147, 692482424027733745256629
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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
..2..2..0..0....1..1..2..2....2..1..0..0....2..2..0..0....0..0..0..2
..1..0..2..2....2..1..0..0....2..2..0..2....1..0..0..2....2..1..0..2
..1..0..1..1....2..2..1..0....0..0..0..2....1..1..2..2....2..2..1..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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