Finding the Formula for the String 2,4,8...

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SUMMARY

The sequence 2, 4, 8 is defined by the formula a_n = 2^n, where n represents the term's position in the sequence starting from n=1. This exponential growth pattern indicates that each term is double the previous term. The discussion clarifies the terminology, emphasizing that the correct term for this series is "sequence" rather than "string." The fourth term, following the established pattern, is 16.

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Homework Statement



Determine the formula of this string:

2,4,8, ...


Homework Equations





The Attempt at a Solution



How will I determine the formula of this string? Is there any general formula, or I am let on my own to determine what it is?

Thank you.
 
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Why do you call, "2, 4, 8, ..." a string? Could you call it a sequence?

Using "2" as the first term, how is the next term determined? How is the term after that one determined? The fourth term is not shown, but the pattern continues.
 
[tex]a_n=2^n[/tex]

But there is another one.
 

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