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Number of Dyck paths of semilength n having exactly 9 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).

2

`%I #4 Jun 04 2014 17:58:57
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`%S 1,21,279,2914,25771,201454,1433041,9469739,59016909,350829247,
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`%T 2006522229,11114963598,59942608977,316006164419,1633786190804,
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`%U 8305527032158,41603804525306,205707814621939,1005426524364506,4863626362504773,23309223454202475,110773290856066906
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`%N Number of Dyck paths of semilength n having exactly 9 (possibly overlapping) occurrences of the consecutive steps UDUUDU (with U=(1,1), D=(1,-1)).
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`%H Alois P. Heinz, <a href="/A243421/b243421.txt">Table of n, a(n) for n = 20..550</a>
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`%Y Column k=9 of A243366.
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`%K nonn
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`%O 20,2
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`%A _Alois P. Heinz_, Jun 04 2014
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