#include <iostream>
#include <stdlib.h>
using namespace std;

//ex 1.4
void  triangle_de_nbrs(int n) {
    for (int i = 1; i <= n; i++) {
        
        for (int j = 1; j <= n - i; j++){
            cout << " ";
        }
        
        for (int j =1; j <= i; j++){
        cout << j;    
        }
        for (int j = i-1; j >= 1; j--){
        cout << j;    
        }
        
        cout << "\n";
        
    }
}

int main() {
    int n;
    cin >> n;
    triangle_de_nbrs(n);
    
    
    return EXIT_SUCCESS;


}