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A232417
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Number of (3+1)X(n+1) 0..2 arrays with every element both >= and <= some horizontal, diagonal or antidiagonal neighbor
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1
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611, 48971, 2189991, 119994763, 7049296087, 406420576301, 23292336981303, 1336844624255445, 76777308098243143, 4408843158662081661, 253155497723433782073, 14536353592415913441265, 834692779757597144689489
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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..0..2....2..2..0....1..1..1....2..0..1....1..1..1....2..2..2....0..0..1
..1..2..0....1..0..1....0..2..1....0..2..1....1..2..0....0..1..2....0..2..0
..1..2..2....0..1..0....2..0..1....1..1..2....2..0..2....0..0..1....1..2..2
..1..0..0....0..0..1....0..1..0....0..0..1....1..2..2....1..2..2....0..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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