#include<iostream>

using namespace std;

int main()
{
    int n;
    while(cin >> n, n)
    {
        for (int i = 0; i < n; i ++)
        {
            for (int j = 0; j < n;j ++)
            {
                cout << min(min(i + 1, j + 1),min(n - i, n - j)) << " ";
            }
            cout << endl;
        }
        cout << endl;
    }
    return 0;
}