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Recurrence Relationsmedium
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Consider a sequence defined by an=an−1+2an−2a_n = a_{n-1} + 2a_{n-2}an​=an−1​+2an−2​ with a0=1,a1=1a_0 = 1, a_1 = 1a0​=1,a1​=1. What is the value of a3a_3a3​?