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A250711
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Number of (4+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction
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1
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10050, 160486, 2003383, 19962956, 171212264, 1307242006, 9230232528, 61126170276, 387004301120, 2358139264124, 13974693194584, 80831674128541, 459221501159086, 2567770538949042, 14188595479850137, 77572100534194499
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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 93 (see link above)
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EXAMPLE
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Some solutions for n=2
..0..0..2....0..0..1....0..1..0....0..0..2....0..0..1....0..0..1....0..0..1
..0..1..2....0..0..3....3..0..2....0..0..2....0..0..1....0..1..2....0..0..2
..0..1..3....0..0..3....0..3..1....0..0..3....2..2..3....0..2..2....0..0..2
..0..2..2....0..1..2....2..1..3....0..0..3....2..3..3....2..2..2....2..1..2
..3..2..2....1..1..2....1..3..1....1..2..1....2..3..3....3..3..2....0..3..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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