One thing is certain, however. No matter how they are arranged, they mountain range will be
one unit higher at the end, since we take n + 1 steps up and only n steps down.
Let’s look at a specific example with n = 3 (and 2n + 1 = 7): up up down up up down down.
In Figure 4, we have arranged this sequence over and over and you can see that every 7 steps, the
mountain range is one unit higher.
Figure 9: