#include<bits/stdc++.h>
using namespace std;
int main(){
    int n;
    cin>>n;
    // write your code here......
    int *p=new int[n*n];
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            p[i+j]=i+j;
            cout<<p[i+j]<<" ";
        }
        cout<<endl;
    }
    return 0;
}