#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,m,a[100][100];
  cin>>n;
  for(int i=1;i<=n;i++){
  	for(int j=1;j<=n;j++){
  	 if(i+j<=n+1) a[i][j]=i;
  	 else a[i][j]=n-j+1;
	  }
  }
  for(int i=1;i<=n;i++){
  	for(int j=1;j<=n;j++){
  		cout<<setw(3)<<a[i][j];
	  }
	  cout<<endl;
  }
	     
	     
	     
	     
}
/**************************************************************
	Problem: 1200
	User: lidongcheng
	Language: C++
	Result: Accepted
	Time:12 ms
	Memory:2072 kb
****************************************************************/