#include <bits/stdc++.h>
using namespace std;
int n, a, b;
int main() {
  ios_base::sync_with_stdio(false);
  cin >> n >> a >> b;
  swap(a, b);
  if (b && !a) {
    if (b == n - 1)
      cout << -1;
    else {
      cout << "1 1 ";
      n -= 2;
      int i;
      for (i = 2; i <= b; ++i) cout << i << " ";
      while (n-- - b + 1) cout << i << " ";
    }
    return 0;
  }
  int c = 2;
  cout << 1 << " ";
  while (a--) cout << c << " ", c *= 2, n--;
  c /= 2;
  while (b--) cout << ++c << " ", n--;
  while (--n) cout << 1 << " ";
  return 0;
}
