#include <bits/stdc++.h>
using namespace std;
const int MAX = 100000;
const int INF = 1000000001;
int n, a, b;
int main(int argc, char *argv[]) {
  scanf("%d %d %d", &n, &a, &b);
  if (b == 0) {
    if (n == 1) {
      printf("1\n");
      return 0;
    }
    if (n == a + 1)
      printf("-1\n");
    else {
      printf("1 1");
      for (int i = 0; i < a; ++i) printf(" %d", i + 2);
      for (int foo = 0; foo < n - a - 2; ++foo) printf(" 1");
      printf("\n");
    }
    return 0;
  }
  printf("1");
  for (int i = 1; i <= b; ++i) printf(" %d", 1 << i);
  for (int i = 1; i <= a; ++i) printf(" %d", (1 << b) + i);
  for (int foo = 0; foo < n - a - b - 1; ++foo) printf(" 1");
  printf("\n");
  return 0;
}
