Given the sequence a defined recursively as follows: a = 0 akak-1+4k - 4 when k>1 1. Terms of the Sequence (4 marks) Calculate a2, a3, a4, a5 Show your intermediate answers as you will need them in the next question. 2. Iteration (6 marks) Using iteration, solve the recurrence relation when n 1 (i.e. find an analytic formula for an ). Simplify your answer as much as possible, showing your work. In particular, your final answer should not contain and II. You must show your work to get full marks.