\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
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\(n\)
1
2
3
4
5
6
\(u_n\)
2
6
12
20
30
42
What is \(u_5\)?
7
8
9
4
5
6
1
2
3
C
0
.
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