#include<bits/stdc++.h>
using namespace std;

int n, a[40][40];
int ii, jj;
int main(){
	cin >> n;
	a[1][(n-1)/2] = 1, ii = 1, jj = (n-1)/2;
	for (int i = 2; i <= n*n; i++) {
		if (ii == 1 && jj != n){
			a[n][jj+1] = i;
			ii = n, jj = jj+1;
		}else if (ii != 1 && jj == n){
			a[ii-1][1] = i;
			ii = ii-1, jj = 1;
		}else if (ii == 1 && jj == n){
			a[ii+1][jj] = i;
			ii = ii+1;
		}else{
			if (a[ii-1][jj+1] == 0){
				a[ii-1][jj+1] = i;
				ii = ii-1, jj = jj+1;
			}else{
				a[ii+1][jj] = i;
				ii = ii+1;
			}
		}
	}
	for (int i = 1; i <= n; i++){
		for (int j = 1; j <= n; j++){
			cout << a[i] << " ";
		}
		cout << endl;
	}
}