84810

Appears in sequences

• a(n) = [ (3rd elementary symmetric function of P(n))/(first elementary symmetric function of P(n)) ], where P(n) = {1, p(1), p(2), ..., p(n-1)}, where p(0) = 1.at n=20A024532
• Number of symmetric primitive Lucas strings of length n.at n=32A250112
• Numbers k such that k-17, k-1, k+1 and k+17 are consecutive primes.at n=3A262176
• Matula-Goebel numbers of transitive rooted identity trees (or transitive finitary sets).at n=28A290760