include <bits/stdc++.h>

using namespace std;

int main() {

int n,a=2,i=0;
cin>>n;
while(i<n)
{
    i++;
    i==n?cout<<a<<'\n':cout<<a<<' ';
    if(i%2==1) a-=1;
    else a+=3;
}
return 0;

}