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A032260
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Number of n X n (0,1) matrices such that each row and each column is nondecreasing or nonincreasing.
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5
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2, 16, 102, 528, 2470, 11016, 47950, 205792, 874998, 3694920, 15519262, 64899456, 270415262, 1123264408, 4653525150, 19234571968, 79342610902, 326704870152, 1343120023678, 5513861152000, 22606830725598, 92580354402712, 378737813468542, 1547884976787648
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OFFSET
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1,1
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LINKS
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FORMULA
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CROSSREFS
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The number of n X n 0, 1 matrices such that each row and each column is increasing is in sequence A000984.
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KEYWORD
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nonn
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AUTHOR
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Yuval Dekel (dekelyuval(AT)hotmail.com), Jun 25 2003
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EXTENSIONS
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STATUS
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approved
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