Respuesta :

Answer:

-140

Step-by-step explanation:

a₀ = 3

a₁ =  3 - 13*1 = -10    

a₂ =  -10 + 13*2 = 16    

a₃ =  16 - 13*4 = -36

a₄ = -36 + 13*8  = 68

a₅ = 68 - 13*16 = -140

* a₀=3     n is integers and n ≥ 1

aₙ = aₙ₋₁ + (-1)ⁿ * 13 * (2)ⁿ⁻¹