Finding the subsets of people sitting around a circular tables
110436
ways to select a non-empty subset of these people, such that no two adjacent people are selected.
5448
Finding the closure of some subsets of the ordered square
113953
Circular permutations with indistinguishable objects
89611
Combinations of selecting $n$ objects with $k$ different types
8458
Combinatorics problem based on Ferrers graph
87431
$n-$circular arrangement problem
98850
A positional number system for enumerating fixed-size subsets?
96906
Calculating statistics on subsets of data
40852
Number of ways of distributing $n$ identical objects among $r$ groups
84910
Generate some number of lists of pairs given a list of people
104152
Stars and bars with lower bound on individual parts
35005
Difficult variation of the committee problem
117658
A set with n elements has 2^n subsets
123137
Recursion: putting people into groups of 1 or 2
132605
Finding the number of subsets of a set such that an element divides the succeeding element.
63571
The Mississipi counting problem, this time in circle
6679
Counting number of subsets which contain a specific element