All permutation of a set including the ones where some elements of the set are missing
93459
Number of permutations of unspecified length
111966
The exact difference between a permutation and a substitution
147766
Sum of Permutations from 0 to n
102136
How many subsets contain no consecutive elements?
3731
How to generate all permutations of a list?
113953
Circular permutations with indistinguishable objects
143427
Counting existing permutations in R
158708
Counting the adjacent swaps required to convert one permutation into another
68581
Combination for subset with duplicates
155831
What are the total number of ordered permutations of a list of elements (possibly repeated)?
46036
Logic for decomposing a permutation into different products composed of transpositions
128834
Proving the number of even and odd permutations of a subgroup $H<S_{n}$ are equal, provided $H$ is not contained in $A_{n}$
114752
Number of permutations of a specific cycle decomposition
115209
Elementary formula for permutations?
47123
Suppose that a set has an odd number of elements. Explain why half of the subsets will have an odd number of elements
80156
Formatting the union of sets
58103
number of permutations in which no two consecutive numbers are adjacent