Answer
See below.
Work Step by Step
According to the exercise:
$a_0=3$
$a_1=a_0-1^2=3-1=2$
$a_2=a_1-2^2=2-4=-2$
$a_3=a_2-3^2=-2-9=-11$
$a_4=a_3-4^2=-11-16=-27$
$a_5=a_4-5^2=-27-25=-52$
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