num = int(input())
l = [1]
for i in range(2, num + 1):
    l.append(l[i - 2] + i)
print(" ".join(list(map(str, l))))
for j in l:
    l.pop(0)
    l = list(map(lambda x: x - 1, l))
    print(" ".join(list(map(str, l))))