#include<bits/stdc++.h> using namespace std; int main() { int n; cin >> n; for (int i = 0; i < n; ++i) { for (int j = 0; j < n; ++j) { int d = i - j; int n; if (d >= 0) { n = d + 1; } else { n = -d + 1; } cout << setw(3) << n; } cout << endl; } return 0; }