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Omni-MATH / A sequence is defined by a₀=1 and a_(n)=2^(a_(n−1)) for n≥1. What is the last digit (in base 10) of a₁₅? · Discussion

Discussing A sequence is defined by a₀=1 and a_(n)=2^(a_(n−1)) for n≥1. What is the last digit (in base 10) of a₁₅? · Omni-MATH

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