#include <iostream>
using namespace std;

int main() {
    int n;
    while (1){
        cin >> n;
        if (n == 0) break;

        for (int i = 0; i < n; i++) {
            for (int j = 0 ; j < n; j++) {
                int a = min(i+1, j+1);
                int b = min(n-i, n-j);
                cout << min(a, b) << ' ';
                if (j == n-1) cout << endl;
            }
        }
        cout<< endl;

    }
    return 0;
}