Java :

import java.util.Scanner;
public class Main {
	public static void main(String[] args) {
		Scanner n = new Scanner(System.in);
		int a = n.nextInt();
		int i = 1, k = 0, y = 0;
		if (a < 10) {
			while (i <= a) {
				k = (a - i) * 2;
				while (k > 0) {
					System.out.print(" ");
					k--;
				}
				y = 0;
				while (i > 0) {
					System.out.print(i + " ");
					i--;
					y++;
				}
				i += 2;
				while (i <= y) {
					System.out.print(i + " ");
					i++;
				}
				System.out.print("\n");
			}
		} else {
			int b = a - 9;
			while (i <= 9) {
				k = (9 - i) * 2 + b * 3;
				while (k > 0) {
					System.out.print(" ");
					k--;
				}
				y = 0;
				while (i > 0) {
					System.out.print(i);
					System.out.print(" ");
					i--;
					y++;
				}
				i += 2;
				while (i <= y) {
					System.out.print(i);
					System.out.print(" ");
					i++;
				}
				System.out.print("\n");
			}
			b = a - 10;
			while (i <= a) {
				k = (a - i) * 2 + b;
				while (k > 0) {
					System.out.print(" ");
					k--;
				}
				b--;
				y = 0;
				while (i > 0) {
					System.out.print(i);
					System.out.print(" ");
					i--;
					y++;
				}
				i += 2;
				while (i <= y) {
					System.out.print(i);
					System.out.print(" ");
					i++;
				}
				System.out.print("\n");
			}
		}
	}
}