140071

Properties

Appears in sequences

• n-th occurrence of gap of n between primes occurs at prime a(n), n even, n >= 2.at n=19A054587
• Primes with 30 as smallest positive primitive root.at n=2A061734
• Number of nodes in row n of the power tree A114622.at n=22A114623
• Hyper-Wiener index of a benzenoid consisting of a spiral chain of n hexagons (s=1; see the Gutman et al. reference).at n=17A193392
• Number of -n..n arrays of 4 elements with first and second differences also in -n..n.at n=12A201089
• Centered 21-gonal primes.at n=23A276261
• Prime numbersat n=13015