`a_1 = -3 `

`a_(k+1)=a_k^2`

`a_2 = a_1^2 = (-3)^2 = 9`

`a_3 = a_2^2 = (9)^2 = 81`

`a_4 = a_3^2 = (81)^2 = 6561`

`a_5 = a_4^2 = (6561)^2 = 43046721`

So the answer is -3, 8, 81, 6561, 43046721

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