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A079104
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Number of permutations of length n containing the minimum number of monotone subsequences of length 4.
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4
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1, 2, 6, 22, 86, 306, 882, 1764, 1764, 8738, 6892, 1682, 14706, 4182, 1250, 6250, 3750, 1250
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OFFSET
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1,2
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COMMENTS
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Conjectured to equal A079105 (and so have period 3) from a(17) onwards.
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LINKS
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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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