#include <bits/stdc++.h>
using namespace std;

int main(){
	int a[10][10];
    int i,j,n;
    cin>>n;
     
    for (i = 0;i < n;i++){
        for (j = 0;j < n - i;j++){
            if (n < i + j){
				a[i][j] = j + 2;
				a[n - j - 1][n - i - 1] = j + 2;
			}else{
				a[i][j] = n - i;
				a[n - j - 1][n - i - 1] = n - i;
			}
        }
    }
     
    for (i = 0;i < n;i++){
        for (j = 0;j < n;j++){
            cout<<setw(3)<<a[i][j];
        }
        cout<<endl;
    }
}
/**************************************************************
	Problem: 1202
	User: admin
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/