#include <bits/stdc++.h>
using namespace std;
int const INF = (1 << 29);
int const MAXN = (int)1e5 + 100;
int n, a, b;
vector<int> ans;
int main() {
  cin >> n >> a >> b;
  if (n == 1) {
    cout << 1;
    return 0;
  }
  ans.push_back(1);
  int cur = 0;
  for (int i = 1; i <= b; i++) {
    ans.push_back((1 << i));
    cur = (1 << i);
  }
  if (b == 0) {
    if (a == n - 1) {
      cout << -1;
      return 0;
    }
    ans.push_back(1);
    cur = 1;
  }
  for (int i = 1; i <= a; i++) {
    ans.push_back(++cur);
  }
  int start = ans.size();
  for (int i = start + 1; i <= n; i++) {
    ans.push_back(1);
  }
  for (int i = 0; i < ans.size(); i++) {
    cout << ans[i] << " ";
  }
  return 0;
}
