print('Input n --> ')
n = int(input())
v = [[0] * n for i in range(n)]
m = n
i = 0
j = n - 1
value = n * n
while n != 0:
    k = 0
    while k < n - 1:
        value -= 1
        j -= 1
        v[i][j] = value
        k += 1
    for k in range(0, n - 1):
        i += 1
        value -= 1
        v[i][j] = value
    for k in range(0, n - 1):
        j += 1
        value -= 1
        v[i][j] = value
    for k in range(0, n - 1):
        i -= 1
        value -= 1
        v[i][j] = value
    i += 1
    j -= 1
    if n < 2:
        n = 0
    else:
        n = n-2
for i in range(m):
    for j in range(m):
        print(v[i][j], end=' ' * 3)
    print()