504243
domain: N
Appears in sequences
- Array T(n,k) = number of conjugacy classes of subgroups of index k in free group of rank n, read by antidiagonals.at n=33A057004
- Number of conjugacy classes of subgroups of index n in free group of rank 3.at n=5A057006
- Number of conjugacy classes of subgroups of index 6 in free group of rank n.at n=2A057012