1337 : 달팽이삼각형

n = int(input())

arr = [[0 for i in range(n+1)] for j in range(n+1)]
num=0
y=0
x=0
i = 0
for i in range(n-1,0,-3):
    for j in range(i):
        arr[y][x]=num
        y+=1
        x+=1
        num+=1
    for j in range(i):
        arr[y][x]=num
        x-=1
        num+=1
    for j in range(i):
        arr[y][x]=num
        y-=1
        num+=1
    y+=2
    x+=1
#print(i)
if i == 3 :
    arr[y][x]=num

for i in range(n):
    for j in range(i+1):
        print(arr[i][j] % 10,end=' ')
    print()