#include<cstdio>
#include<iostream>
#include<algorithm>

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++)
            {
                cout<<min(min(i,n-i+1),min(j,n-j+1))<<' ';
            }
            cout<<endl;
        }
        cout<<endl;
    }
}