EN
For k ≥ 2, the k-generalized Fibonacci sequence $(Fₙ^{(k)})ₙ$ is defined to have the initial k terms 0,0,...,0,1 and be such that each term afterwards is the sum of the k preceding terms. We will prove that the number of solutions of the Diophantine equation $Fₘ^{(k)} - Fₙ^{(ℓ)} = c > 0$ (under some weak assumptions) is bounded by an effectively computable constant depending only on c.