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Find the first four terms of the sequences whose \(n^{\text{th}}\)  terms are given by:
 
[Note: \(n ∈\) Natural numbers \((\mathbb{N})\)]
 
an=(-2)n+2n(n+4)
 
\(a_1 =\) , \(a_2 =\) , \(a_3 =\) , \(a_4 =\)