#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  int n, a, b;
  cin >> n >> a >> b;
  if (a + b > n - 1 || a == n - 1 && n > 1)
    cout << -1 << endl;
  else {
    if (n == 1)
      cout << 1 << endl;
    else {
      cout << 1 << " ";
      n--;
      int c;
      n -= (a + b);
      for (int i = 1; i <= b; i++) {
        c = 1 << i;
        cout << c << " ";
      }
      while (n > 0) {
        cout << c << " ";
        n--;
      }
      while (a > 0) {
        c++;
        cout << c << " ";
        a--;
      }
    }
    cout << endl;
  }
  return 0;
}
