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A223969
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Number of n X n 0..2 arrays with rows and antidiagonals unimodal
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0
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3, 81, 9515, 2558848, 1140963027, 715985189481, 574360426081996, 553932588795530549, 616038706732274614176, 766990732794703992309550, 1046181711135056928867576316, 1538264672813438079567996935803
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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....1..2..1....0..1..0....0..1..1....2..2..0....1..2..0....0..2..0
..1..1..2....0..2..2....0..1..2....1..2..0....0..1..0....0..1..0....1..1..0
..2..0..0....0..2..1....2..2..1....2..2..2....0..0..0....0..1..0....2..0..0
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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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