Question 1208339
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See this <a href = "https://www.algebra.com/algebra/homework/Sequences-and-series/Sequences-and-series.faq.question.1195799.html">similar question</a>
On that link I try to find the next term in the sequence 1,2,4,...
It turns out there are at least 3 different possible answers for that question. There may be infinitely many answers. 
This shows that vague questions like this are very flawed. There needs to be more context provided. 
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