#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,i,j,a[15][15]={0},d; 
    cin>>n;
    for(i=1;i<=n;i++){
    	for(j=i;j>=1;j--){
    		a[n+1-i][n+1-j]=j;
    	}
    	for(d=1,j=i;d<=n+1-i;d++){
        	a[n+1-i][d]=j;
        }
        }
        
    for(i=1;i<=n;i++){
        for(j=1;j<=n;j++){
            cout<<setw(3)<<a[i][j];
        }
        cout<<endl;
    }
}

/**************************************************************
	Problem: 1197
	User: lvrenxiang
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/