N = int(input().strip())

a = [[0 for _ in range(N)] for _ in range(N)]

lst = [(1, 0), (0, 1), (-1, 0), (0, -1)]

cnt = 1
idx = 0
#b = lst[0]
x, y = 0, 0
x_tmp, y_tmp = 0, 0

while True:
  if cnt > N**2:
    break
  
  if a[y_tmp % N][x_tmp % N] > 0:
    idx += 1
  else:
    a[y_tmp][x_tmp] = cnt
    cnt += 1
    x, y = x_tmp, y_tmp
  
  x_tmp, y_tmp = x + lst[idx % len(lst)][0], y + lst[idx % len(lst)][1]

for y in range(N):
  print(' '.join(['{:03d}'.format(a[y][i]) for i in range(N)]))