#include <iostream>
#include <cmath>
using namespace std;
int n, m[21][21], c, g, i, j;
int main()
{
cin >> n;
c = n;
for(i = 1; i <= n; i ++)
{
c --;
g = c;
for(j = 1; j <= n; j ++)
{
if(i + j == n + 1) m[i][j] = 0;
else if(i + j < n + 1) m[i][j] = g;
else m[i][j] = abs(g);
g --;
}
}
for(i = 1; i <= n; i ++)
{
for(j = 1; j <= n; j ++)
cout << m[i][j] << " ";
cout << endl;
}
return 0;
}
