#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("avx2")
using namespace std;
void err(istream_iterator<string> it) {}
template <typename T, typename... Args>
void err(istream_iterator<string> it, T a, Args... args) {
  cerr << "[" << *it << " = " << a << "]";
  err(++it, args...);
}
const int maxt = 50000;
int n, a, b, r;
vector<int> ans;
int sum;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  cin >> n >> a >> b;
  r = n - a - b;
  r--;
  sum = 1;
  ans.push_back(1);
  if (b == 0 && a) {
    ans.push_back(1);
    r--;
    if (a + 1 == n) {
      cout << -1 << "\n";
      return 0;
    }
  }
  for (int i = 0; i < b; ++i) {
    sum *= 2;
    ans.push_back(sum);
  }
  for (int i = 0; i < a; ++i) {
    sum++;
    ans.push_back(sum);
  }
  for (int i = 0; i < r; ++i) ans.push_back(1);
  for (auto x : ans) cout << x << " ";
}
