A sequence a1, a2, a3, ... is defined by letting a1 = 3
Chapter 5, Problem 24E(choose chapter or problem)
Problem 24E
A sequence a1, a2, a3, ... is defined by letting a1 = 3 and ak = 7ak—1 for all integers k ≥2. Show that an = 3•7n–1 for all integers n ≥ 1.
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