a(n) is the smallest squarefree number k with n prime factors such that gcd(k, d2-d1) = 1 for all coprime pairs of divisors of k, 1 < d1 < d2 < k.
A287935
a(n) is the smallest squarefree number k with n prime factors such that gcd(k, d2-d1) = 1 for all coprime pairs of divisors of k, 1 < d1 < d2 < k.
Terms
- a(0) =2a(1) =6a(2) =105a(3) =23023a(4) =16028909a(5) =40502880317
External references
- oeis: A287935