ProperBlocks on Permutation
Windows p(i), ..., p(j) of two or more entries whose values are consecutive integers, the whole word excepted.
Called as CombinatorialStat(x, "ProperBlocks"). The head's page has its examples.
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FindStat St001160
The number of proper blocks (or intervals) of a permutations.
| Object | Value |
|---|---|
[1] | 0 |
[1,2] | 0 |
[2,1] | 0 |
[1,2,3] | 2 |
[1,3,2] | 1 |
[2,1,3] | 1 |
[2,3,1] | 1 |
[3,1,2] | 1 |
Data from FindStat, the combinatorial statistic finder; the page at findstat.org/St001160 has the rest.