#include<bits/stdc++.h>

using namespace std;

int a[50][50];

int main(){

int n;
cin>>n;
int x=0,y=0;
y=(n-1)/2;
a[x][y]=1;
for(int i=2;i<=n*n;i++){
	if(x==0&&y!=n-1){
		x=n-1;
		y=y+1;
		a[x][y]=i;
	}
	else if(y==n-1&&x!=0){
		x-=1;
		y=0;
		a[x][y]=i;
	}
	else if(x==0&&y==n-1){
		x+=1;
		a[x][y]=i;
	} 
	else if(x!=0&&y!=n-1){
		if(a[x-1][y+1]==0){ 
		x-=1;
		y+=1;
		a[x][y]=i;
	}
	else{
		x=x+1;
		a[x][y]=i;
	}
}

} for(int i=0;i<n;i++){ for(int j=0;j<n;j++){ cout<<a[i][j]<<" "; } cout<<endl; } return 0; }