76851

Appears in sequences

• Number of rooted identity trees with n nodes (rooted trees whose automorphism group is the identity group).at n=18A004111
• Number of 4 X n binary matrices such that any 2 rows have a common 1, up to column permutations.at n=7A052388
• Triangular array read by rows: T(n,k) is the number of rooted identity trees with n nodes having exactly k subtrees from the root.at n=57A227774
• Number of rooted identity trees with 2n nodes.at n=9A299098