func iscube x .
   for i = 1 to x
      h = i * i * i
      if h = x
         return 1
      elif h > x
         return 0
      .
   .
.
while cnt < 30
   sq += 1
   sq2 = sq * sq
   if iscube sq2 = 0
      write sq2 & " "
      cnt += 1
   .
.