207009649
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=40A057004
- Number of conjugacy classes of subgroups of index n in free group of rank 5.at n=4A057008
- Number of conjugacy classes of subgroups of index 5 in free group of rank n.at n=4A057011
- Number of conjugacy classes of subgroups of index n in free group of rank n.at n=4A057013