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A278731
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Number of nX5 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
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1
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456, 121520, 28637916, 6410559865, 1351385130108, 268284486351027, 50067074390669892, 8732216738504713198, 1415177080112634284232, 212485358907612452321760, 29562031801069787043980684
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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=2
..1..3..3..2..1. .1..3..2..2..0. .3..1..2..1..0. .3..2..1..0..0
..3..2..2..3..1. .2..1..1..0..2. .3..2..0..1..0. .0..1..2..1..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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