#include <bits/stdc++.h>
#include <algorithm>
using namespace std;
int main()
{
int N;
int res;
while(cin >> N, N)
{
for(int i = 1; i <= N; i++)
{
for(int j = 1; j <= N; j++)
{
int res = min(min(i, N - i + 1), min(j, N - j + 1));
cout << res << " ";
}
cout << endl;
}
cout << endl;
}
return 0;
}