#include<bits/stdc++.h>
using namespace std;
int n,m[1000][1000];
int main(){
    cin>>n;
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            m[i][j]=(i-1)*n+j;
        }
    }
    for(int i=1;i<=n;i++){
        for(int j=1;j<=n;j++){
            cout<<setw(3)<<m[i][j];
        }
        cout<<endl;
    }
}
/**************************************************************
	Problem: 1184
	User: wangchenyu
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:5980 kb
****************************************************************/