#include <bits/stdc++.h>
int main(int, char*[]) {
  int n, a, b;
  std::cin >> n >> a >> b;
  int i = 0;
  int c = 0;
  if (b == 0) {
    c = 1;
    if (a != 0) {
      if (n == a + 1) {
        std::cout << -1 << std::endl;
        return 0;
      };
      std::cout << "1 1 ";
      c = 1;
      i = 2;
      for (; i <= a + 1; ++i) {
        ++c;
        std::cout << c << ' ';
      }
    }
    for (; i < n; ++i) {
      std::cout << 1 << ' ';
    }
  } else {
    int d = 1;
    for (; i <= b; ++i) {
      std::cout << d << ' ';
      d <<= 1;
    }
    c = d / 2;
    for (; i <= a + b; ++i) {
      ++c;
      std::cout << c << ' ';
    }
    for (; i < n; ++i) {
      std::cout << 1 << ' ';
    }
  }
  return 0;
};
