#include <iostream>
#include <iomanip>
using namespace std;

int main() {
    int n;
    cin >> n;
    
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            // 计算当前位置的值，中心为最大值n，向四周递减
            int value = 1 + max(abs(i - j), abs((n-1-i) - (n-1-j)));
            cout << setw(3) << value;
        }
        cout << endl;
    }
    
    return 0;
}    
/**************************************************************
	Problem: 1193
	User: fuyijun
	Language: C++
	Result: Wrong Answer
****************************************************************/