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A224347
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Number of n X n 0..2 arrays with diagonals and antidiagonals unimodal and rows nondecreasing
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0
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3, 36, 788, 19608, 495985, 12340932, 300892325, 7202270426, 169987960308, 3972599259664, 92292550974356
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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=3
..0..1..1....0..0..1....1..2..2....0..0..0....1..2..2....0..0..0....0..0..1
..1..1..2....1..1..2....0..1..2....0..0..2....0..2..2....0..1..2....2..2..2
..2..2..2....0..1..1....1..1..1....0..2..2....0..0..1....0..0..0....0..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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