JOMO 6, Short 3

Algebra Level 4

Given a sequence that starts with a1a_1 and each term is defined by:

an=n3−4n−1,a_n = n^3 - 4n -1,

what are the last 3 digits of the sum of the first 66 terms of this sequence?

Aditya Raut by Aditya Raut
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