Place or Formulas for trips odds

[caretaker1]

Is there a website, or for the more mathematically inclined, formulas, which will show the percentage chance that at least one other player will have a third card on a paired flop (for example: flop TT7, what's the % that someone has at least a third T). Also, formulas including additional players would be helpful (in other words, % if there are 2 opponents, 3 opponents, etc.). Finally, I realize this is unrealistic, but assume that each third card is equally likely (2's as likely as A's; as if opponents were playing random hands).

Thank you in advance.