4440150

Appears in sequences

• Row sums of triangle A099575.at n=17A099576
• Triangle read by rows: T(n,k) is the number of nonroot nodes of outdegree k (0<=k<=n-1) in all non-crossing trees with n edges.at n=46A100400
• Number of ways to place 3 points on a triangular grid of side n so that they are not vertices of an equilateral triangle of any orientation.at n=23A240440