def solve(N):
    uzu = [[0] * N for i in range(N)]
    r, c = 0, 0
    drdc = [(0,1), (1,0),(0,-1),(-1,0)]
    d = 0
    for i in range(1, N * N + 1):
        uzu[r][c] = zero3str(i)
        d = next_d(d, r, c, drdc, N, uzu)
        dr, dc = drdc[d]
        r += dr
        c += dc
    for row in uzu:
        print(' '.join(row))

def zero3str(i):
    str_i = str(i)
    k = 3 - len(str_i)
    res = '0' * k + str_i
    return res

def next_d(d, r, c, drdc, N, uzu):
    dr, dc = drdc[d]
    nr = r + dr
    nc = c + dc
    if nr >= N or nr < 0 or nc >= N or nc < 0:
        return (d + 1) % 4
    if uzu[nr][nc] != 0:
        return (d + 1) % 4
    return d

N = int(input())
solve(N)