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Recursionmedium
0:00.0

Which closed-form formula satisfies both the recurrence an=2an−1−an−2a_n = 2a_{n-1} - a_{n-2}an​=2an−1​−an−2​ and the initial conditions a0=3,a1=5a_0 = 3, a_1 = 5a0​=3,a1​=5?