230204

n = int(input())

if n==1:
    print(1)
else:
    data = []
    for i in range(n):
        v = []
        for j in range(n):
            v.append(0)
        data.append(v)
    y = n // 2
    x = 0
    cnt = 1
    data[x][y] = cnt
    cnt += 1
    while True:
        x-=1
        y+=1
        if x < 0:
            x = n-1
        if y >= n:
            y = 0
        data[x][y] = cnt
        cnt += 1
        if cnt > n*n:
            break
        if (cnt-1) % n == 0:
            x+=1
            data[x][y] = cnt
            cnt += 1

    for i in range(n):
        for j in range(n):
            print(data[i][j], end=' ')
        print()