#include <iostream>
#include <cstdio>

using namespace std;

int main() {

    int n;
    while (cin >> n, n)
    {
        for (int i = 1; i <= n; i ++ )
        {
            for (int j = 1; j <= n; j ++ )
            {
                //点(i, j)到上下左右四条边距离的最小值
                int up = i, down = n - i + 1, left = j, right = n - j + 1;
                cout << min(min(up, down), min(left, right)) << ' ';
            }
            cout << endl;
        }

        cout << endl;
    }


    return 0;

}