#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll N=1e5+1e4,M=1e3+1e2;
const ll Maxn=0x3ffffff,Minm=-0x3ffffff;
ll n;
signed main()
{
    cin>>n;
    while(n!=0)
    {
        for(ll i=1;i<=n;i++)
        {
            for(ll j=1;j<=n;j++)
            {
                ll ans=Maxn;
                ans=min(ans,i);
                ans=min(ans,n-i+1);
                ans=min(ans,j);
                ans=min(ans,n-j+1);
                cout<<ans<<" ";
            }
            cout<<"\n";
        }
        cout<<"\n";
        cin>>n;
    }
}