#include<bits/stdc++.h>
using namespace std;
int n,a[15][15],i,j;
int main(){
    cin>>n;
    for(i=1;i<=n;i++){
    	for(j=1;j<=n;j++){
    		if(i+j<=n+1) a[i][j]=i+j-1;
    		else a[i][j]=n*2+1-i-j;
    	}
    }
    for(i=1;i<=n;i++){
    	for(j=1;j<=n;j++){
    		cout<<setw(3)<<a[i][j];
    	}
    	cout<<endl;
    }
}

/**************************************************************
	Problem: 1193
	User: yangjunwen
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/