777041

Properties

Appears in sequences

• Primes of the form (p*(q-1) + (p-1)*q)/2, where p and q are consecutive odd primes.at n=22A099911
• a(n) is the total number of down steps between the second and third up steps in all 2_1-Dyck paths of length 3*n. A 2_1-Dyck path is a lattice path with steps (1, 2), (1, -1) that starts and ends at y = 0 and stays above the line y = -1.at n=9A334643
• Prime numbersat n=62245