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A201428
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Number of nX4 0..2 arrays with rows and columns lexicographically nondecreasing and the instance counts of every value within one of each other
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1
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3, 76, 622, 33740, 561271, 2740779, 96745050, 1042095316, 3442865393, 88529711419, 713489134252, 1807746313421, 37066136105268, 241902857874013, 503427752952568, 8681256219590301, 48116992979572975, 85825473881325409
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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..1..1..1....0..0..0..2....0..0..0..2....0..1..1..2....0..0..0..1
..2..0..1..2....1..1..2..1....0..1..2..1....0..2..2..0....1..1..2..0
..2..0..1..2....1..1..2..1....1..1..2..0....1..0..0..2....1..2..2..1
..2..2..0..0....2..2..0..0....2..1..2..2....2..0..1..1....2..2..2..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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