import java.util.Scanner;

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

        int n = scanner.nextInt();
        int count =1;

        for (int i = 1; i <= n; i++) { // number of rows
            for (int j = 1; j <= i; j++) { // cols

                System.out.printf("%d ", count);

            }
           count++;
            System.out.println(" "); // to form the triangle, otherwise they are printed in a single row

        }


    }
}