861420

Appears in sequences

• Number T(n,k) of endofunctions on [n] with all cycles of length k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=40A243098
• Number T(n,k) of endofunctions on [n] where the smallest cycle length equals k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=40A246049
• Number of endofunctions on [2n] where the smallest cycle length equals n.at n=4A246050
• Number of endofunctions on [n] where the smallest cycle length equals 4.at n=4A246191
• Number of unordered quadruples of self-avoiding paths with nodes that cover all vertices of a convex n-gon; one-node paths are allowed.at n=9A360276
• Triangle read by rows: T(n,k) is the number of sets of noncrossing paths of size k that cover n nodes arranged in a circle with one node paths allowed, 0 <= k <= n.at n=59A390894