def main(n):
  ans=[[0]*n for _ in range(n)]
  idx=0
  for i in range(1,n+1):
    ans[idx][0]=i
    idx=(idx+2)%n
  for j in range(1,n):
    for i in range(n):
      ans[i][j]=ans[(i+1)%n][j-1]
  return ans

n=int(input())
a=main(n)
for x in a:print(*x)