from collections import deque
dxy = [(0,1), (1,0), (0,-1), (-1,0)]

N = int(input())

visited = [[False]*N for i in range(N)]
visited[0][0] = True
L = [[""]*N for i in range(N)]
L[0][0] = "001"

c = 1
q = deque([(0,0)])
while len(q) :
    y,x = q.popleft()
    c += 1
    for dy,dx in dxy :
        ny,nx = y+dy,x+dx
        if ny<0 or ny>=N or nx<0 or nx>=N :
            continue
        if visited[ny][nx] :
            continue
        visited[ny][nx] = True
        L[ny][nx] = str(c).zfill(3)
        q.append((ny,nx))
        break

for i in range(N) :
    print(*L[i])