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A228672
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Number of permutations of [n] having a shortest ascending run of length 5.
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2
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1, 0, 0, 0, 0, 251, 922, 1582, 2572, 4002, 756755, 6029297, 31742676, 120956707, 398182782, 12794989968, 166170816448, 1418774022895, 9698826682676, 55499002033421, 894582818429967, 14637215156295242, 177486208140377619, 1730337098015002802
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OFFSET
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5,6
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LINKS
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FORMULA
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a(n) ~ c * d^n * n!, where d = 0.4206507959..., c = 0.1811532007... . - Vaclav Kotesovec, Sep 07 2014
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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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