607189

Appears in sequences

• Number of ordered unlabeled rooted trees with n nodes such that the minimal outdegree of inner nodes equals 2.at n=15A244531
• Number of vertices formed in a hexagon by straight line segments when connecting the n-1 points between each corner that divide each edge into n equal parts to the n-1 points on the edge on the opposite side of the hexagon.at n=21A367663