SOLUTION: the number of the sequence is 17, if the second number is 3, what is first number of the sequence?

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Question 975307: the number of the sequence is 17, if the second number is 3, what is first number of the sequence?
Answer by farohw(175) About Me  (Show Source):
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In this sequence, if the second number is 3 then the pattern is: multiply each number by 2 then subtract 1.
2, 3, 5, 9, 17

So the first number of the sequence is 2.