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A233493
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Number of (n+2) X (4+2) 0..2 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards.
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1
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205862149, 108934667695, 57417306351598, 30258000792128359, 15945021790711870267, 8402516744270059192510, 4427856941758752650124295, 2333338629541317978393143944, 1229594638242708728348131570618
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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=1
..0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..1..0..1..0..0..2....0..2..0..2..1..0....0..0..0..2..2..0....0..2..1..2..0..0
..2..0..1..0..0..2....1..1..2..0..2..2....2..2..2..0..0..1....2..0..1..1..0..1
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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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