What is the asymptotic of the number of subgroups of $S_n$?
15396
Enumerating all subgroups of the symmetric group
149578
Subgroups of $(\mathbb Z_n,+)$
107010
How many elements of order $k$ are in $S_n$?
128652
Subgroups of $\mathbb Z \times(\mathbb Z/n\mathbb Z)$
43750
Subgroups of finite solvable groups. Solvable?
104112
Number of finite simple groups of given order is at most $2$ - is a classification-free proof possible?
96614
Finite number of subgroups $\Rightarrow$  finite group
84658
What is the number of distinct subgroups of the automorphism group of $\mathbf{F}_{3^{100}}$?
33945
Showing that $|N \cap Z(G)| > 1$ for normal subgroups of p-groups
146098
Number of nonempty subsets of a set with $n$ elements
72048
Finding Sylow 2-subgroups of the dihedral group $D_n$
50762
If $S_n$ has cyclic subgroups of these orders or not?
133770
Subgroups of finite abelian groups.
71262
Subgroups of order $9$ isomorphic to $C_3 \times C_3$ in $S_6$
131594
Can the symmetric group $S_n$ be imbedded as a subgroup in $A_{n+1}$?
115746
Find the order of a subgroup of $S_5$ generated by two elements
88344
Order of a group and subsequent subgroups