#include <bits/stdc++.h>
void generateSquare(int n) {
  int magicSquare[n][n];
  memset(magicSquare, 0, sizeof(magicSquare));
  int i = n / 2;
  int j = n - 1;
  for (int num = 1; num <= n * n;) {
    if (i == -1 && j == n) {
      j = n - 2;
      i = 0;
    } else {
      if (j == n) j = 0;
      if (i < 0) i = n - 1;
    }
    if (magicSquare[i][j]) {
      j -= 2;
      i++;
      continue;
    } else
      magicSquare[i][j] = num++;
    j++;
    i--;
  }
  for (i = 0; i < n; i++) {
    for (j = 0; j < n; j++) printf("%d ", magicSquare[i][j]);
    printf("\n");
  }
}
int main() {
  int n;
  scanf("%d", &n);
  generateSquare(n);
  return 0;
}
