import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		sc.close();

		int[][] a = new int[n][n];
		for (int i = 1; i <= n; i++) {
			int x = i - 1;
			int y = i - 1 + n;
			for (int j = 0; j < n; j++) {
				a[x % n][y % n] = i;
				x++;
				y--;
			}
		}
		for (int i = 0; i < n; i++) {
			StringBuilder sb = new StringBuilder();
			for (int j = 0; j < n; j++) {
				sb.append(a[i][j]).append(' ');
			}
			sb.deleteCharAt(sb.length() - 1);
			System.out.println(sb.toString());
		}
	}
}