#include<iostream>

int a[100][100] = {0};

using namespace std;

int main()
{
    int n;
    while(cin >> n, n)
    {
        for(int i = 0; i < n; i ++)
        {
            a[i][i] = 1;
            for (int j = i + 1,k = 2;j < n; j ++, k++) a[i][j] = k;
            for (int j = i + 1,k = 2;j < n; j ++, k++) a[j][i] = k;
        }

        for (int i = 0; i < n; i ++)
        {
            for (int j = 0; j < n; j ++) cout << a[i][j] << " " ;
            cout << endl ;
        }
        cout << endl;
    }
    return 0;
}