1207433

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=34A322765
• Row 1 of array in A322765.at n=6A322766
• Number of partitions of the (n+6)-multiset {1,2,...,n,1,2,...,6}.at n=7A346883
• Number of partitions of the (n+7)-multiset {1,2,...,n,1,2,...,7}.at n=6A346884