#include<bits/stdc++.h>
using namespace std;
int main(){
int i,j,a[15][15]={0},n;
cin>>n;
for(i=1;i<=n;i++){
	for(j=1;j<=n+1-i;j++){
		a[i][j]=i+j-1;
	}
	for(j=n;j>=i;j--){
		a[n+1-i][j]=n+i-j;
	}
}	
		for(i=1;i<=n;i++){
			for(j=1;j<=n;j++){
				cout<<setw(3)<<a[i][j];
			}
			cout<<endl;
		}
}	















/**************************************************************
	Problem: 1197
	User: linweilun
	Language: Java
	Result: Compile Error
****************************************************************/