import java.util.Scanner;
public class Main{
public static void main (String[] args){
	Scanner sc = new Scanner(System.in);
	int n = sc.nextInt();
	for(int i = 1; i <= n; i++) {
		for(int k = 1; k <= i-1 ; k++) {
			System.out.print(" ");
			
		}
		
		for(int j = 1; j <= 2 * n -(2 * i - 1) ; j++) {
			System.out.print(n + 1 - i);
		}
		System.out.print('\n');
	}

}
}
/**************************************************************
	Problem: 1788
	User: admin
	Language: Java
	Result: Accepted
	Time:721 ms
	Memory:40248 kb
****************************************************************/