#include<cstdio>
#include<iostream>
using namespace std;
int main(){
	int n;
	freopen("2015magic.in","r",stdin);
	freopen("2015magic.out","w",stdout);
	cin>>n;
	int m=n;
	n=n*n;
	int a[m+1][m+1],x[10000]={0,1},y[10000]={0,m/2+1,0};
	for(int i=1;i<=m;i++)
	for(int j=1;j<=m;j++)
	    a[i][j]=0;
	a[x[1]][y[1]]=1;
	for(int i=2;i<=n;i++){
	if(x[i-1]==1&&y[i-1]!=m){
		x[i]=m;
		y[i]=y[i-1]+1;
		a[x[i]][y[i]]=i;
	}
	if(y[i-1]==m&&x[i-1]!=1){
		y[i]=1;
		x[i]=x[i-1]-1;
		a[x[i]][y[i]]=i;
	}
	if(x[i-1]==1&&y[i-1]==m){
		x[i]=2;
		y[i]=m;
		a[x[i]][y[i]]=i;
	}
	if(x[i-1]!=1&&y[i-1]!=m){
		if(a[x[i-1]-1][y[i-1]+1]==0){
			x[i]=x[i-1]-1;
			y[i]=y[i-1]+1;
			a[x[i]][y[i]]=i;
		}
		else{
			x[i]=x[i-1]+1;
			y[i]=y[i-1];
			a[x[i]][y[i]]=i;
		}
	}
	}
	for(int i=1;i<=m;i++){
		for(int j=1;j<=m;j++)
			cout<<a[i][j]<<" ";
		cout<<"\n";
	}
}