A244200 - OEIS

%I #5 Jun 22 2014 10:03:43

%S 1,7,43,215,1073,5058,23953,112217,530779,2506867,11965685,57344884,

%T 277801349,1354273789,6670778019,33102793363,165896192078,

%U 837960354362,4272278074880,21954732604289,113823300476914,594723866847085,3133570169932798,16636300212628344

%N Number of ballot sequences of length n having largest descent 4.

%C Also number of ballot sequences of length n having largest ascent 4.

%Y Column k=4 of A238128 and of A238129.

%K nonn

%O 6,2

%A _Joerg Arndt_ and _Alois P. Heinz_, Jun 22 2014