#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,cnt=1;
    cin>>n;
    int a[105][105]={0};
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<n;j++)
        {
            a[n-1-j-i][n-1-i]=i+1;
            a[n-1-i][n-1-j-i]=i+1;
        }
    }
    for(int i=0;i<n;i++){
        for(int j=0;j<n;j++){
            cout<<setw(3)<<a[i][j];
        }
        cout<<endl;
    }
    return 0;
}
/**************************************************************
	Problem: 1197
	User: luyanchen
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/