#include<bits/stdc++.h>
using namespace std;
int main(){
	int i,j,n,a[15][15]={0};
	cin>>n;
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			if(i+j<n){
				a[i][j]=i+j+1;
			}else{
				a[i][j]=(n*2-1)-i-j;
			}
		}
	}
	for(i=0;i<n;i++){
		for(j=0;j<n;j++){
			cout<<setw(3)<<a[i][j];
		}
		cout<<endl;
	} 
}

/**************************************************************
	Problem: 1193
	User: wngjinming
	Language: C++
	Result: Accepted
	Time:19 ms
	Memory:2072 kb
****************************************************************/