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