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A223675
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Number of n X n 0..1 arrays with rows and antidiagonals unimodal
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0
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2, 16, 316, 9822, 384009, 17068664, 821284360, 41697505423, 2202335611907, 120016210924727, 6715040320826544, 384617913213951506, 22513060559771644440, 1345458233683987073442, 82071805127975022481091
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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
..1..1..1....1..1..0....0..1..1....0..0..1....0..1..0....0..1..0....0..1..1
..0..1..1....1..1..0....1..1..0....1..1..1....1..1..1....0..0..0....1..0..0
..0..0..1....0..1..1....1..1..1....0..1..0....0..0..0....0..1..1....0..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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