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