Exercise 7.

Consider the sequence given recursively by \(a_1 = 4\text{,}\) \(a_2 = 6\) and \(a_n = a_{n-1} + a_{n-2}\text{.}\)

  1. Write out the first 6 terms of the sequence.

  2. Could the closed formula for \(a_n\) be a polynomial? Explain.

Solution.
in-context