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A268104
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Number of 1Xn 0..n arrays with every repeated value in every row and column greater than or equal to the previous repeated value.
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3
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2, 9, 64, 615, 7536, 112476, 1981512, 40265487, 927338710, 23873974553, 679478391252, 21185458961316, 718142599280848, 26296505423775240, 1034431689380433024, 43505385550994833263, 1948060006167232265688
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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=5
..0..2..1..4..5....2..3..2..1..5....2..3..0..5..2....2..5..0..5..3
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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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