1643356

Appears in sequences

• Number of 3-tuples (p_1, p_2, p_3) of Dyck paths of semilength n, such that each p_i is never below p_{i-1}.at n=7A006149
• Upper triangle of Catalan Number Wall.at n=48A078920
• Triangle read by rows, giving Kekulé numbers for certain benzenoids (see the Cyvin-Gutman book for details).at n=51A123352
• Triangle read by rows: Table III.5 of Myriam de Sainte-Catherine's 1983 thesis.at n=84A185249
• Array read by ascending antidiagonals: A(n,k) is the determinant of the n-th order Hankel matrix of Catalan numbers M(n) whose generic element is given by M(i,j) = A000108(i+j+k) with i,j = 0, ..., n-1.at n=62A368025
• Number of nested pairs of Dyck paths of lengths n and n+1.at n=8A389288