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%I #5 Apr 28 2014 19:02:53
%S 32,1310,26159,349021,3537427,29216728,205795528,1274811402,
%T 7106683612,36230838069,171229815244,757346853197,3162754360421,
%U 12546713825786,47572219652564,173111049909503,607264725020735,2059610656640095,6776341942347065,21674530092011291
%N Number of ballot sequences of length n having exactly seven descents.
%Y Column k=7 of A238121 and of A238122.
%K nonn
%O 12,1
%A _Joerg Arndt_ and _Alois P. Heinz_, Apr 28 2014
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