#include<iostream>
#include<stdio.h>
using namespace std;

int main() {
	int n,h[10][10]={0},dx[4]={0,1,0,-1},dy[4]={1,0,-1,0},s=1,k=0,x=1,y=1;
	cin>>n;
	while(s<=n*n) {
		h[x][y]=s;	
		if(x==1&&y==n||x==n&&y==1||x==n&&y==n||h[x+dx[k]][y+dy[k]]!=0)k=(k+1)%4;
		x+=dx[k];
		y+=dy[k];
		s++;	
	}
	for(int i=1;i<=n;i++) {
		for(int j=1;j<=n;j++) {
			printf("%3d ",h[i][j]);
		}
		cout<<endl;
	}	
	return 0;
}