73339

Appears in sequences

• Triangular array read by rows: T(n,k) is the number of functional digraphs on {1,2,...,n} such that every element is mapped to a recurrent element and there are exactly k cycles, n>=1, 1<=k<=n.at n=22A228534
• Number of set partitions of [n] where sizes of distinct blocks are coprime.at n=11A280275
• The number of vertices on a vesica piscis formed by the straight line segments mutually connecting all vertices and all points that divide the sides into n equal parts.at n=18A341878