#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  cout << 3 << " " << 6 << " ";
  for (int i = 2; i <= n; i += 2) {
    if (i != 6) cout << i << " ";
  }
  cout << endl;
  return 0;
}