import java.util.*;
public class Main{
public static void main(String[] args){
Scanner sc = new Scanner(System.in);
int n = 0;
while(sc.hasNext()){
n = sc.nextInt();
for(int i = 0;i<n;i++){
for(int j= 0;j<n;j++){
System.out.print((Math.abs(i-j)+1)+" ");
}
System.out.println();
}
if(n!=0){
System.out.println();
}
}
}
}