import sys
input = lambda :sys.stdin.readline()[:-1]
ni = lambda :int(input())
na = lambda :list(map(int,input().split()))
yes = lambda :print("yes");Yes = lambda :print("Yes");YES = lambda : print("YES")
no = lambda :print("no");No = lambda :print("No");NO = lambda : print("NO")
#######################################################################

n = ni()
a = [[-1] * n for i in range(n)]

X = n//2
Y = n//2

a[X][Y] = 1

t = 2
for i in range(1, n):
    if i % 2 == 0:
        F = 1
    else:
        F = -1
    X += i * F
    a[X][Y] = t
    t += 1
    
    for j in range(i):
        if j % 2 == 0:
            X -= (i - j) * F
            Y += (i - j) * F
            a[X][Y] = t
            t += 1
            X += 1 * F
            a[X][Y] = t
            t += 1
        else:
            # print(X, Y, i, j)
            X += (i - j) * F
            Y -= (i - j) * F
            # print(X, Y)
            a[X][Y] = t
            t += 1
            Y += 1 * F
            a[X][Y] = t
            t += 1
for z in range(n):
    print(*a[z])