陶哲轩谜题时间。今天的谜题由陶哲轩提出，他或许是世界上最著名的数学家。
Terence Tao teaser time Today’s puzzle is set by Terence Tao, who may be the world’s most famous mathematician.
现年51岁的陶哲轩自十岁起便成为全球瞩目的焦点，当时他成为了国际数学奥林匹克竞赛中最年轻的参赛者，这一纪录至今仍由他保持。在过去的三十年里，他一直担任加州大学洛杉矶分校的教授，在那里他获得了无数奖项，他的一位同事曾有名言：“特里就像莫扎特：数学知识从他身上自然流淌而出。”
Tao, aged 51, has been a global phenomenon since the age of ten, when he became the youngest competitor at the International Maths Olympiad, a record he still holds. For the last three decades he has been a professor at UCLA, where he has been garlanded with prizes, and where one of his colleagues famously said: “Terry is like Mozart: mathematics just flows out of him.”
普通植物每天产出一枚硬币，母本植物每天产出一枚硬币和两颗种子。（种子会在次日长成普通植物。）
a regular plant produces a single coin per day a mother plant produces a single coin and two seeds per day. (A seed will grow into a regular plant the following day.)