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Number of ballot sequences of length n having largest descent 6.

2

`%I #5 Jun 22 2014 10:05:57
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`%S 1,9,73,467,2941,17062,98109,549830,3078128,17083101,95234969,
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`%T 530955450,2980776051,16808708404,95549803402,546704306077,
`

`%U 3154865181339,18342681708367,107574634701933,635887706724494,3791175789308746,22783950119750786,138077379449210041
`

`%N Number of ballot sequences of length n having largest descent 6.
`

`%C Also number of ballot sequences of length n having largest ascent 6.
`

`%Y Column k=6 of A238128 and of A238129.
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`%K nonn
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`%O 8,2
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`%A _Joerg Arndt_ and _Alois P. Heinz_, Jun 22 2014
`