#include <iostream>
#include <iomanip>
using namespace std;

int main() {
    int n;
    if (!(cin >> n)) return 0;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            cout << setw(3) << (i + j == n - 1 ? 1 : 0);
        }
        cout << '\n';
    }
    return 0;
}
/**************************************************************
	Problem: 1191
	User: 231308061
	Language: C++
	Result: Accepted
	Time:23 ms
	Memory:2072 kb
****************************************************************/