Mathematics, 11.11.2019 19:31 addisynshepherd

The first term in the sequence 5, 7, −7, is 5. each even-numbered term is 2 more than the previous term and each odd-numbered term, after the first, is (−1) times the previous term. for example, the second term is 5+2 and the third term is (−1)×7. what is the 255th term of the sequence?

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