#include<bits/stdc++.h>
using namespace std;
const int N=10000001;
int t,P[N];
long long C[N];
int main(){
  iota(P,P+N,0);
  for(int i=2;i<N;i++){
    if(P[i]==i)for(int j=i;j<N;j+=i)P[j]-=P[j]/i;
    C[i]=C[i-1]+2*(i-1)-P[i];
  }
  for(cin>>t;t--;){
    int n;
    cin>>n;
    cout<<C[n]<<'\n';
  }
}