Make and prove a conjecture about when the Fibonacci sequence, $F_n$, is divisible by $7$.
I've realized it's when $n$ is a multiple of $8$. I just don't know how to go about proving it.
Make and prove a conjecture about when the Fibonacci sequence, $F_n$, is divisible by $7$.
I've realized it's when $n$ is a multiple of $8$. I just don't know how to go about proving it.