1493344

Appears in sequences

• Number of set partitions of the multiset consisting of one copy each of x_1, x_2, ..., x_n, and 2 copies each of y_1 and y_2.at n=8A322764
• Number of partitions of the (n+10)-multiset {1,2,...,n,1,2,...,10}.at n=2A346887