Respuesta :

The solution to the problem is as follows:

Just plug in the numbers and follow the pattern. 

a0 = 1 

a1 = 2*1 + 2 = 4 

a2 = 2*4 +2 = 10 

a3 = 2*10 +2 = 22

I hope my answer has come to your help. God bless and have a nice day ahead!