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A233846
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Number of (1+2)X(n+2) 0..3 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards
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1
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201664, 9828513, 480071296, 23453646656, 1144779904896, 55884483506105, 2727732140106016, 133143607148769360, 6498789675465401792, 317209014468004733569, 15483100618582896359504, 755736565677187286591248
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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 56 (see link above)
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EXAMPLE
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Some solutions for n=1
..1..1..1....0..3..2....0..0..0....0..3..3....0..3..0....1..1..1....1..3..1
..0..2..1....3..3..0....0..2..1....2..2..2....2..3..1....3..3..0....1..1..1
..1..0..0....2..3..2....1..0..1....3..1..2....2..0..1....1..1..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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