13384681

Appears in sequences

• Numbers for which the harmonic mean of nontrivial divisors is an integer and which are not a square of prime numbers.at n=24A247079
• The largest nontrivial divisor of n equals the sum of the other nontrivial divisors of n.at n=12A333079
• G.f. A(x) satisfies A(x) = 1 / (1 - x - x * (1 + x + x^2) * A(x^3)).at n=17A367656