The square numbers can be defined by the recursive formula a1 = 1, and an = an-1 + (2n - 1), where n > 1. the first five square numbers are

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?