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A224203
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Number of nX7 0..3 arrays with rows unimodal and antidiagonals nondecreasing
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1
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1163, 180821, 11446096, 475218035, 17178450136, 618703866073, 22835261226043, 856178295327574, 32299825618280351, 1220504574023229563, 46124705848425800316, 1742806875797016046956, 65840694352751999751002
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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 41 (see link above)
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EXAMPLE
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Some solutions for n=3
..0..0..0..0..0..1..1....0..0..0..0..0..1..0....0..0..0..0..2..0..0
..0..0..0..1..3..2..0....0..0..0..1..1..1..1....0..0..0..2..3..2..0
..0..0..1..3..3..3..1....0..0..2..3..3..3..3....0..2..2..3..3..2..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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