Respuesta :

Answer:

433

Step-by-step explanation:

2(1)³ + 1 = 3

2(2)³ + 1 = 17

2(3)³ + 1 = 55

2(4)³ + 1 = 129

2(5)³ + 1 = 251

2(6)³ + 1 = 433