Finding the n-th arrangement of items with repetitions
3568
Fast way to get a position of combination (without repetitions)
120748
Combination With Finite Replacements
8049
Generating Combinations
97314
Counting nearly-sorted permutations
29713
$k$ times's draw from $n$ numbers with replacement, each number at least appear once
108943
Combining the second elements of a set of ordered pairs based on their first element
58103
number of permutations in which no two consecutive numbers are adjacent
28496
Generating the partitions of a number
20636
Algorithm for finding numerical permutation given lexicographic index
22274
Partitioning a natural number $n$ in order to get the maximum product sequence of its addends
34334
Combinatorics Problem with symbols and spaces
97254
What is the proof of permutations of similar objects?
107964
Simple combinatorics problem.
68882
Path to Combinatorics Problem [$1.11$]
56135
Find all permutations with a condition
26619
Permutations of word 'mathematics'
135408
Solving permutation problem sequentially.