20716

Appears in sequences

• Sum of 12 positive 9th powers.at n=15A004801
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 96 ones.at n=13A031864
• Integers k such that 10^k - 27 is prime.at n=19A108329
• a(n) is the maximum value of the quartet index of a bifurcating rooted tree with n leaves.at n=33A300445