Find the number of integers \(n\) between \(4\) and \(2016\), inclusive, that cannot be expressed in form of \(n=a+b\), where \(1<a<b\) and both \(a\) and \(b\) are integers, while \(GCD(a,b)=1\) (\(a\) and \(b\) are coprime).

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