#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, a, b, last = 1;
  cin >> n >> a >> b;
  if (a > 0 && a > n - 2) {
    cout << -1;
    return 0;
  }
  cout << last;
  for (int i = 1; i < n; i++) {
    cout << ' ';
    if (b) {
      last <<= 1;
      cout << last;
      b--;
    } else if (a && i >= 2) {
      last++;
      cout << last;
      a--;
    } else
      cout << last;
  }
  cin >> n;
}
