A243415 - cp's OEIS frontend

A243415 Number of Dyck paths of semilength n having exactly 3 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).

%I A243415 #4 Jun 04 2014 18:18:34
%S A243415 1,9,54,279,1334,6092,27048,117896,507173,2160151,9128266,38326830,
%T A243415 160063712,665442560,2755685897,11372798741,46794914849,192029181971,
%U A243415 786126469079,3211253947191,13091799706905,53277016211285,216451122516387,878040805034630
%N A243415 Number of Dyck paths of semilength n having exactly 3 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).
%H A243415 Alois P. Heinz, <a href="/A243415/b243415.txt">Table of n, a(n) for n = 8..550</a>
%Y A243415 Column k=3 of A243366.
%K A243415 nonn
%O A243415 8,2
%A A243415 _Alois P. Heinz_, Jun 04 2014

cp's OEIS Frontend

A243415 Number of Dyck paths of semilength n having exactly 3 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).