n = int(input())

A = [[0 for i in range(n)] for j in range(n)]
A[0][0] = 1
f = True
h = ((0, 1), (-1, 0), (0, -1), (1, 0))
c = 0
i, j = 0, 0
while A[i][j] < n**2:
    while (
        0 <= (ii := i + h[c % 4][0]) < n
        and 0 <= (jj := j + h[c % 4][1]) < n
        and A[ii][jj] == 0
    ):
        A[i + h[c % 4][0]][j + h[c % 4][1]] = A[i][j] + 1
        i, j = i + h[c % 4][0], j + h[c % 4][1]
    c += 1

for a in A:
    print(*map(lambda x: "0" * (3 - len(str(x))) + str(x), a))