#include <bits/stdc++.h>
using namespace std;
int n,a[11][11],cnt=0,i=1,j=0;
int main(void){
	cin>>n;
	while(cnt<=n*n){
		while(!a[i][j+1]&&j<n)a[i][++j]=cnt++;
		while(!a[i+1][j]&&i<n)a[++i][j]=cnt++;
		while(!a[i][j-1]&&j>1)a[i][--j]=cnt++;
		while(!a[i-1][j]&&i>1)a[--i][j]=cnt++;
		
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n;j++)cout<<a[i][j]<<" ";
		cout<<endl; 
	}
	return 0;
}