431636

Appears in sequences

• Array read by upwards antidiagonals: T(m,n) = number of set partitions into distinct parts 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=40A322770
• Main diagonal of array in A322770.at n=4A322775
• Number of partitions of the (n+4)-multiset {1,2,...,n,1,2,3,4} into distinct multisets.at n=8A346897
• Number of partitions of the (n+8)-multiset {1,2,...,n,1,2,...,8} into distinct multisets.at n=4A346901