#include<bits/stdc++.h>
using namespace std;
int main(){
  int n,m,a[100][100];
  cin>>n;
  for(int i=1;i<=n;i++){
    for(int j=1;j<=n;j++){
     if(i+j<=n+1) a[i][j]=i+j-1;
     else a[i][j]=2*n-i-j+1;
      }
  }
  for(int i=1;i<=n;i++){
    for(int j=1;j<=n;j++){
        cout<<setw(3)<<a[i][j];
      }
      cout<<endl;
  }
}
/**************************************************************
	Problem: 1193
	User: lidongbo
	Language: C++
	Result: Accepted
	Time:10 ms
	Memory:2072 kb
****************************************************************/