OccurrencesOfDDU on DyckPath
Occurrences of two down steps followed by an up step.
Called as CombinatorialStat(x, "OccurrencesOfDDU"). The head's page has its examples.
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Distribution
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FindStat St000386
The number of factors DDU in a Dyck path.
| Object | Value |
|---|---|
[] | 0 |
[1,0] | 0 |
[1,0,1,0] | 0 |
[1,1,0,0] | 0 |
[1,0,1,0,1,0] | 0 |
[1,0,1,1,0,0] | 0 |
[1,1,0,0,1,0] | 1 |
[1,1,0,1,0,0] | 0 |
Data from FindStat, the combinatorial statistic finder; the page at findstat.org/St000386 has the rest.