Why are the Fibonacci quotients $\frac{F_{2n}}{F_{2n+1}}$ the only rationals that make $\frac{x}{1 - x - x^2}$ a non-negative integer?
Posted by Silvio Mayolo, at math.stackexchange.com,
I've been studying A081018 as part of a programming challenge. Skipping some of the introductory material, the crux of the…