#include <iostream>
using namespace std;

int n , a[51][51];

int main()
{
    cin >> n;
    for(int k = 1 ; k <= n/2 ; ++k)
    {
        for(int j = k; j<=n-k+1 ; j++)
            a[k][j] = a[n-k+1][j] = a[j][k] = a[j][n-k+1] = k;
    }
    if(n%2 == 1)
        a[n/2+1][n/2+1] = n/2+1;
    for(int i = 1 ; i <= n ; i++)
    {
        for(int j = 1 ; j <= n ; j++)
            cout << a[i][j] << " ";
        cout<<endl;
    }
    return 0;
}