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A266427
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Number of nX7 binary arrays with rows and columns lexicographically nondecreasing and column sums nondecreasing.
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0
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8, 92, 1170, 16585, 251381, 3889553, 59155748, 861030491, 11809616668, 151566391972, 1816912772913, 20365495779036
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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=4
..0..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..0..0..0
..0..0..0..0..0..1..1....0..0..1..1..1..1..1....0..0..0..0..0..1..1
..0..1..1..1..1..0..1....0..1..0..0..0..1..1....0..0..0..0..0..1..1
..1..0..0..1..1..1..1....1..1..1..1..1..0..0....0..0..0..0..1..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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