755820

Appears in sequences

• Number of diagonal dissections of a convex n-gon into n-5 regions.at n=7A002056
• Number of tree-rooted bridgeless planar maps with two vertices and n faces.at n=11A002740
• Numbers k such that sopfr(k) = ud(k), where sopfr = A001414 and ud = A034444.at n=17A064029
• Number of Dyck paths of semilength n having exactly eight (possibly overlapping) occurrences of the consecutive step pattern given by the binary expansion of n, where 1=U=(1,1) and 0=D=(1,-1).at n=16A243777
• Number of 2n-length strings of balanced parentheses of exactly 9 different types that are introduced in ascending order.at n=1A258397