The Coprime Chain
A sequence is defined by a₁ = 2, a₂ = 3, and for n ≥ 3, aₙ is the smallest integer greater than an-1 that is coprime to an-1 but shares a prime factor with an-2. What is a₆?
Build the sequence term by term — each step only depends on the two previous terms.
Comments
Loading the conversation…