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%I #4 Jun 04 2014 18:01:58
%S 1,19,229,2184,17759,128509,851831,5278129,31020976,174803309,
%T 952033480,5042006351,26087126992,132340281386,660143136637,
%U 3245280843311,15751929981822,75602686035094,359256881535197,1691965976395069,7904617778358794,36660673151053000
%N Number of Dyck paths of semilength n having exactly 8 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).
%H Alois P. Heinz, <a href="/A243420/b243420.txt">Table of n, a(n) for n = 18..550</a>
%Y Column k=8 of A243366.
%K nonn
%O 18,2
%A _Alois P. Heinz_, Jun 04 2014
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