SOLUTION: Is the formula an = -4n(n-1) explicit or recursive? Find the first five terms of the sequence.

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Question 634460: Is the formula an = -4n(n-1) explicit or recursive? Find the first five terms of the sequence.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
It's explicit because you can find ANY term without having to know anything about the previous term (or terms).

First term:

an = -4n(n-1)

a1 = -4*1*(1-1)

a1 = -4*0

a1 = 0
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Second term:

an = -4n(n-1)

a2 = -4*2*(2-1)

a1 = -8*1

a1 = -8

I'll let you finish.