snake

n = int(input())
ma = [[0 for i in range (2 * n + 1)] for i in range (2 * n + 1)]
shb = 1
x = n - 1
y = n
for i in range(n):
    for j in range((i + 1) * 2 - 1):
        ma[x][y] = shb
        y -= 1
        shb += 1
    for j2 in range((i + 1) * 2):
        ma[x][y] = shb
        x += 1
        shb += 1
    for j3 in range((i + 1) * 2):
        ma[x][y] = shb
        y += 1
        shb += 1
    for j4 in range((i + 1) * 2 + 1):
        ma[x][y] = shb
        x -= 1
        shb += 1
for t in ma:
    for x in t:
        print(str(x).rjust(3), end = "")
    print()