Leonardo Fibonacci of Pisa was one of the greatest mathematicians of the Middle Ages....

Leonardo Fibonacci of Pisa was one of the greatest mathematicians of the Middle Ages. He is perhaps most famous for the Fibonacci sequence, which can be applied to many diverse problems. One amusing application of the Fibonacci sequence is in finding the growth rate of rabbits. Suppose a pair of rabbits matures in 2 months and is capable of reproducing another pair every month after maturity. If every new pair has the same capability, how many pairs will there be after 1 year? (We assume here that no pairs die.) The table below shows the sequence for the first 7 months. Notice that at the end of the second month, the first pair matures and bears its first offspring in the third month, making the total two pairs.

The Nth Fibonacci number in the sequence can be evaluated with the formula

Write an application that accepts N and displays FN. Note that the result of computation using the Math class is double. You need to display it as an integer.