Plot the first five terms of the sequence an = n, starting at n = 1, on a number line.
The first five terms are 1, 2, 3, 4, and 5.
These terms don't appear to be clumping around anything. The terms are increasing and equally spaced. This sequence isn't an untamed tiger. It's more of a predictable, but untamable goo, slowly oozing down a hill.