Find the first three terms of the sequence defined below, where n represents the position of a term in the sequence. Start with n = 1.

an = 3n

The first three terms of the sequence are:

For n = 1: a1 = 3(1) = 3
For n = 2: a2 = 3(2) = 6
For n = 3: a3 = 3(3) = 9

Therefore, the first three terms of the sequence are 3, 6, and 9.