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A278323
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Number of nX6 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.
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1
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21, 1492, 51229, 1548002, 43798840, 1133034160, 26606146271, 577253086055, 11856994168275, 234252250004719, 4462457602929707, 81437338008292870, 1411665474225016752, 23098384621606953307, 355699829714059120732
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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..0..1..1..0. .0..1..0..1..0..1. .0..0..0..1..1..1. .0..1..0..1..1..1
..1..0..1..0..1..1. .0..1..1..0..1..0. .0..1..1..1..1..1. .1..0..0..1..0..0
..1..1..0..0..1..0. .1..0..1..1..0..1. .1..1..0..1..1..0. .1..0..0..1..0..1
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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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