Which recursive formula can be used to represent the sequence 2,6,10,14, !

The first term = 2

a1 = 2

a_n=a_{n-1}+4

Step-by-step explanation:

We have the sequence 2, 6, 10, 14, 18, ... Always 4 being added, so we can say:

The first term is 2. The added is 4, so,

a1 = 2

Prove:

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right