odds

import java.util.Scanner;

public class P09SumOfOddNumbers {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int n = Integer.parseInt(scanner.nextLine()); //5

        int sum = 0;
        for (int i = 1; i <= n * 2; i++) {
            if (i % 2 != 0) {
                System.out.println(i);
                sum = sum + i;
            }
        }

        System.out.println("Sum: " + sum);
    }
}