171329

Properties

Appears in sequences

• Least prime P such that 3*p(n)*P*(3*p(n)*P+1)-1, 3*p(n)*P*(3*p(n)*P+1)+1,3*p(n)*P*(3*p(n)*P+3)-1,3*p(n)*P*(3*p(n)*P+3)+1 are all primes with p(i) = i-th prime.at n=18A137839
• Primes of the form abs(n^4 - 97n^3 + 3294n^2 - 45458n + 213589) in order of increasing nonnegative n.at n=1A272410
• Number of inversion sequences of length n avoiding the consecutive pattern 010.at n=9A328504
• a(1) = 1; thereafter a(n) = Sum_{k = 1..n} a(k/gcd(n,k)).at n=20A333613
• Prime numbersat n=15611