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A228672 Number of permutations of [n] having a shortest ascending run of length 5. 2

%I

%S 1,0,0,0,0,251,922,1582,2572,4002,756755,6029297,31742676,120956707,

%T 398182782,12794989968,166170816448,1418774022895,9698826682676,

%U 55499002033421,894582818429967,14637215156295242,177486208140377619,1730337098015002802

%N Number of permutations of [n] having a shortest ascending run of length 5.

%H Alois P. Heinz and Vaclav Kotesovec, <a href="/A228672/b228672.txt">Table of n, a(n) for n = 5..350</a> (first 100 terms from Alois P. Heinz)

%F a(n) ~ c * d^n * n!, where d = 0.4206507959..., c = 0.1811532007... . - _Vaclav Kotesovec_, Sep 07 2014

%Y Column k=5 of A064315.

%K nonn

%O 5,6

%A _Alois P. Heinz_, Aug 29 2013

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Last modified July 29 08:13 EDT 2021. Contains 346340 sequences. (Running on oeis4.)