import java.util.Scanner;
public class Program {
public static void main(String[] args) {
  Scanner scNumb =new Scanner(System.in);
  int numb = scNumb.nextInt();
  int sum = 0;
  for(int i=1;i<=numb;i++){
      sum +=i;
      System.out.println(sum);
  }
 }
}

1
3
6
10
15

1+0=1
1+2=3
3+3=6
6+4=10
10+5=15