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A233706
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Number of (1+2)X(n+2) 0..3 arrays with no increasing sequence of length 3 horizontally, vertically, diagonally downwards or antidiagonally downwards
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1
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164860, 7442986, 336085716, 15181195220, 684540459662, 30867953018180, 1391576275588606, 62734772781863860, 2828089225813921212, 127490606293041633351, 5747257439547644528906, 259085528588813709797896
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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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FORMULA
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Empirical recurrence of order 88 (see link above)
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EXAMPLE
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Some solutions for n=1
..1..1..1....2..1..0....1..1..3....3..0..0....1..1..0....1..3..3....1..2..1
..1..1..2....2..2..1....0..1..0....0..0..0....3..3..3....3..1..3....0..0..0
..2..1..2....0..1..0....1..3..3....2..1..1....3..3..1....3..2..2....3..2..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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