Answer
See below.
Work Step by Step
According to the exercise:
$a_0=4$
$a_1=(a_0)^2-10=4^2-10=6$
$a_2=(a_1)^2-10=6^2-10=26$
$a_3=(a_2)^2-10=26^2-10=666$
$a_4=(a_3)^2-10=666^2-10=443546$
$a_5=(a_4)^2-10=443546^2-10=196733054106$
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