n = int(input()) a = [ [0]*n for x in range(n) ] for i in range(n): for j in range(n): if i==j: a[i][j] = i+1 for jj in range(j+1,n):#向右发射 a[i][jj] = i+1 for ii in range(i + 1, n):#向下发射 a[ii][j] = i + 1 for row in a: print(*row)