#include <bits/stdc++.h>
#pragma comment(linker, "/STACK:256000000")
using namespace std;
const double PI = 3.1415926535897932384626433832795;
const string NAME = "tricir";
const string IN_NAME = NAME + ".in";
const string OUT_NAME = NAME + ".out";
const double eps = 1e-9;
int n, a, b;
vector<int> ans;
int main() {
  cin >> n >> a >> b;
  if (n == 1 && a == 0 && b == 0) {
    cout << 42;
    return 0;
  }
  int x = 1;
  if (b == 0) {
    if (a == n - 1) {
      cout << -1;
      return 0;
    } else {
      cout << "1 ";
      --n;
    }
  }
  for (int i = 0; i < n; i++) {
    if (i == 0)
      cout << x << " ";
    else {
      if (b > 0) {
        x *= 2;
        --b;
      } else if (a > 0) {
        x += 1;
        --a;
      }
      cout << x << " ";
    }
  }
}
