69821

Properties

Appears in sequences

• Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d = 2, 4 or 6) and forming d-pattern=[6,2,4]; short d-string notation of pattern = [624].at n=18A078853
• a(n) = prime(n*prime(n)).at n=39A228529
• a(n) = (1/2)*A291228(n).at n=10A291257
• Primes in A240860 (up to sign).at n=13A339957
• Prime numbersat n=6920