View Code of Problem 60

#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
int main(){
    int T,n;
    cin>>T;
    while (T--) {
        cin>>n;
        cout<<pow(2, n)-(n-2)*pow(2, n-3)-pow(2, n-2)<<endl;
    }
    return 0;
}

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