#include <iostream>
using namespace std;
int main() {
int dim;
while (cin >> dim) {
if (dim > 0){
int arr[dim][dim] = {0};
for (int i = 0; i < dim; i++) {
for (int j = 0; j < dim; j++) {
cout << min(min(i + 1, j + 1), min(dim - i, dim - j)) << " ";
}
cout << endl;
}
} else {
break;
}
cout << endl;
}
return 0;
}