N = int(input())

ans = [[-1]*N for _ in range(N)]
cnt = 1
for i in range(N//2):
    c = cnt-2
    for j in range(i, i+(N-2*i)*2-1):
        if j%2 == i%2:
            c += 2
        h, w = i, j
        if N-1-i < w:
            diff = w-(N-1-i)
            h += diff
            w = N-1-i
        ans[h][w] = c
        c += 1
    c = cnt
    for j in range(i+1, i+(N-2*i)*2-1):
        if j%2 != i%2:
            c += 2
        h, w = j, i
        if N-1-i < h:
            diff = h-(N-1-i)
            w += diff
            h = N-1-i
        ans[h][w] = c
        c += 1
    cnt += (N-2*i)*4-4

if N%2 == 1:
    ans[N//2][N//2] = N**2

for a in ans:
    print(*a)