Answer
See below.
Work Step by Step
According to the exercise:
$a_1=-1$
$a_2=a_1+6=-1+6=5$
$a_3=a_2+6=5+6=11$
$a_4=a_3+6=11+6=17$
$a_5=a_4+6=17+6=23$
$a_6=a_5+6=23+6=29$
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