799708

Appears in sequences

• Number of labeled 2-trees with n nodes.at n=7A036361
• Triangle read by rows: T(n,r) = number of maximum r-uniform acyclic hypergraphs of order n and size n-r+1, 1 <= r <= n+1.at n=38A135021
• a(n) = ((n-th prime)^6-(n-th prime)^4)/6.at n=5A138456