#include <iostream>
#include <iomanip>
using namespace std;
int main() {
    int n;
    cin >> n;
    int arr[10][10] = {0};
    int x = 0, y = 0;
    int num = 1;
    int dir[4][2] = {{0,1}, {1,0}, {0,-1}, {-1,0}};
    int d = 0;
    while (num <= n * n) {
        arr[x][y] = num++;
        int nx = x + dir[d][0];
        int ny = y + dir[d][1];
        if (nx < 0 || nx >= n || ny <0 || ny >=n || arr[nx][ny] != 0) {
            d = (d + 1) % 4;
            nx = x + dir[d][0];
            ny = y + dir[d][1];
        }
        x = nx;
        y = ny;
    }

    for (int i = 0; i < n; i++) {
        for (int j = 0; j < n; j++) {
            cout << setw(3) << arr[i][j];
        }
        cout << endl;
    }
    return 0;
}