What are the first four terms of the sequence defined by the formula an = 2n + 4?

The sequence defined by the formula a_n = 2n + 4 generates terms based on the natural numbers where n starts from 1. To find the first four terms, we replace n with 1, 2, 3, and 4:

• For n = 1: a₁ = 2(1) + 4 = 2 + 4 = 6
• For n = 2: a₂ = 2(2) + 4 = 4 + 4 = 8
• For n = 3: a₃ = 2(3) + 4 = 6 + 4 = 10
• For n = 4: a₄ = 2(4) + 4 = 8 + 4 = 12

Thus, the first four terms of the sequence are: 6, 8, 10, and 12.