How many ways to split n elements in k groups?
106397
Counting ways to partition a set into fixed number of subsets
96086
Double Factorial: Number of possibilities to partition a set of $2n$ items into $n$ pairs
67926
$S_n$ is generated by elements of the form $(1k)$
158285
How to solve this combinatorial problem about selecting letters from different groups?
26569
Counting binary operations on a set with $n$ elements
56829
Grouping a list into lists of n elements in Haskell
20973
How can I find all the subsets of a set, with exactly n elements?
72440
Partition a set into $k$ non-empty subsets
115973
Computing the number of nonisomorphic finite abelian groups of order $n$
86825
Split Multiplication of integers
132605
Finding the number of subsets of a set such that an element divides the succeeding element.
122125
Order of group element divides order of finite group
152904
Groups with Same Number Of Elements and Subgroups
88356
Number of options to distribute $N$ different balls to $K$ numbered cells
107010
How many elements of order $k$ are in $S_n$?
35648
How many permutations of the set n={1,2,3,3,3,4,4,5} are possible without any consecutive identical elements?
43845
Partitioning the edges of $K_n$ into $\lfloor \frac n6 \rfloor$ planar subgraphs