n = int(input())

row = 1

while row <= n:

#Print karo space (1st triangle)

space = n - row

while space:

print(" ", end="")

space = space - 1

#print 2nd triangle

j = 1

while j <= row:

print(j, end="")

j = j + 1

#print 3rd triangle

start = row - 1

while start:

print(start, end="")

start = start - 1

print()

row = row + 1