#include<bits/stdc++.h>
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++){
           //利用min函数取两个方阵的重合值
               cout<<min(min(i,j),min(n-i+1,n-j+1))<<' ';
           }
           cout<<endl;
       }
       cout<<endl;
   }
   return 0;
}