import java.io.*;
import java.util.*;
public class Main{
int i,j,n,z;
int arr[][]=new int[100][100];
Scanner S=new Scanner(System.in);
public void mainpattern()
{
n=S.nextInt();
z=1;
for(i=0;i<n;i++){
for(j=i;j<n;j++){
arr[j][i]=z;
z+=1;
}
}
for(i=0;i<n;i++){
for(j=i;j>=0;j--)
System.out.print(arr[i][j]+" ");
System.out.print("\n");
}
}
public static void main(String args[]){
Main p=new Main();
p.mainpattern();
}
}