%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
