#include<bits/stdc++.h>
using namespace std;
int n,a[20] [20];
int main(){
	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+j-1;
			else a[i][j]=2*n-(i+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: 1193
	User: suziqian
	Language: C++
	Result: Compile Error
****************************************************************/