#include<bits/stdc++.h>
using namespace std;
int n,i,j,a[12][12],h;
int main(){
	cin>>n;
	for(i=1;i<=n;i++){
		for(j=1;j<=n;j++){
			if(i+j<=n+1) a[i][j]=i+j-1;
			else a[i][j]=n*2+1-i-j;
		}
	}
	for(i=1;i<=n;i++){
		for(j=1;j<=n;j++){
			cout<<setw(3)<<a[i][j];
		}
		cout<<endl;
	}
}

/**************************************************************
	Problem: 1193
	User: zengyixuan
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/