149410

Appears in sequences

• Array read by upwards antidiagonals: T(m,n) = number of set partitions of the multiset consisting of one copy each of x_1, x_2, ..., x_m, and two copies each of y_1, y_2, ..., y_n, for m >= 0, n >= 0.at n=39A322765
• Column 3 of array in A322765.at n=5A322768
• Number of partitions of the (n+8)-multiset {1,2,...,n,1,2,...,8}.at n=3A346885