#include <bits/stdc++.h>
using namespace std;
//1186 、1187
int main()
{

    int n;
    cin >> n;
    int a[20][20]={0};
    for(int i=0;i<n;i++)
    {
        for(int j=0;j<=i;j++)
        {
            a[i-j][j] = i+1;
            a[n-1-(i-j)][n-1-j] = (2*n-1)-i;
        }
    }
    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: 1192
	User: mariooo
	Language: C++
	Result: Accepted
	Time:8 ms
	Memory:2072 kb
****************************************************************/