The sequence an is defined recursively by the rules ao = 1, a = 5, and...
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The sequence an is defined recursively by the rules ao = 1, a₁ = 5, and for n ≥ 2, an 2an-1 +an-2. What is the value of a4? The sequence an is defined recursively by the rules ao = 1, a₁ = 5, and for n ≥ 2, an 2an-1 +an-2. What is the value of a4?
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