斐波那契,是13世纪意大利著名的数学家,在他的著作《算盘》一书中,有一个著名的兔子问题:一对小兔子,一个月后长成一对大兔子,这对大兔子每经过一个月就可以生一对小兔子,而每对小兔子也都是经过一个月可以长成大兔子,长成大兔子后也是每过一个月就可以生一对小兔子,那么,从此人在市场上买回那对小兔子算起,每个月后他拥有多少对兔子? Fibonacci is a famous Italian mathematician in the 13th century. In his book Abacus, there is a famous rabbit problem: a pair of rabbits, which grow into a pair of rabbits a month later. This is a pair of rabbits. After each month, you can give birth to a pair of bunnies, and each pair of bunnies can grow into a rabbit after a month. Once you grow into a rabbit, you can give birth to a pair of bunnies every month. Then, from this How many pairs of rabbits does he have each month after the person buys it back in the market?