#include<iostream>
#include<stdio.h>
#include<math.h> 
#include<algorithm>
#include<cstring> 
#include <string>
using namespace std;
int po[100][100];
int x[100];
int y[100];
int main()
{
	int n;
	cin >> n;
	po[0][n / 2] = 1;
	x[1] = 0, y[1] = n / 2;
	for (int i = 2; i <= n * n; i++)
	{
		if (x[i - 1] == 0 && y[i - 1] != n - 1)
		{
			po[n-1][y[i - 1]+1] = i;
			x[i] = n - 1, y[i] = y[i - 1] + 1;
		}
		else if (x[i - 1] != 0 && y[i - 1] == n - 1)
		{
			po[x[i-1]-1][0] = i;
			x[i] = x[i - 1] - 1, y[i] = 0;
		}
		else if (x[i - 1] == 0 && y[i - 1] == n - 1)
		{
			po[x[i - 1] + 1][y[i-1]] = i;
			x[i] = x[i - 1] + 1, y[i] = y[i - 1];
		}
		else
		{
			if (po[x[i - 1] - 1][y[i - 1] + 1] == 0)
			{
				po[x[i - 1] - 1][y[i - 1] + 1] = i;
				x[i] = x[i - 1] - 1, y[i] = y[i - 1] + 1;
			}
			else
			{
				po[x[i - 1] + 1][y[i - 1]] = i;
				x[i] = x[i - 1] + 1, y[i] = y[i - 1];
			}
		}
		
	}
	for (int i = 0; i < n; i++)
	{
		for (int j = 0; j < n; j++)
		{
			cout << po[i][j]<<' ';
		}
		cout << endl;
	}
	return 0;
}