Using the last of my points please help!!!!! AND A BRAINLIEST!

Answer:
a₁ = - 64
Step-by-step explanation:
a₁ = - 64
a₂ =1/4 x a₂₋₁ = 1/4 x a₁ = 1/4 x (- 64) = - 16
a₃ =1/4 x a₃₋₁ = 1/4 x a₂ = 1/4 x (- 16) = - 4