package no1_1;
import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n=scanner.nextInt();
        int[][] array=new int[n][n];
        int count=1;
        for(int k=0;k<n;k++) {//蛇形的第k层
        	for(int i=k,j=0;i>=0 && j<=k;i--,j++) {//填满该层
    			array[i][j]=count++;
        	}
        }
        for(int i=0;i<n;i++) {
        	for(int j=0;j<n;j++) {
        		if(array[i][j]!=0) {//蛇形矩阵为正整数
            		System.out.print(array[i][j]+" ");        			
        		}
        	}
        	System.out.println();
        }
    }
}