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();
}
}
}