41896

Appears in sequences

• Number of asymmetric (identity) trees with n nodes and 5 leaves.at n=19A055336
• Number of symmetry classes of 3 X 3 magilatin squares with positive values < n.at n=23A173729
• Number T(n,k) of sets of nonempty words with a total of n letters over k-ary alphabet such that for k>0 the k-th letter occurs at least once and within each word every letter of the alphabet is at least as frequent as the subsequent alphabet letter; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=49A319498