I just discovered that when you list your novel on Amazon you can say it's part of a series and identify what number in the series it is. Amazon says it helps readers find other books in the series.
So I searched on Lee Child to see what he did for his Jack Reacher series.
Some of his books are titled: book title: A Jack Reacher Novel.
In the above case, the series option wasn't used.
Other books are: book title (Jack Reacher, Book 1)
The above does use the series.
So the Jack Reacher books are inconsistent. I thought maybe it was the different publishers, but Random House sometimes used the series and sometimes did not, and Penguin did it at least one time (I just sampled some of his novels).
Anyway, any thoughts about using Amazon's series for something like a Jack Reacher series? If you see two novels with (series name, Book 1 and series name, Book 2 would you think they were a series like Lord of the Rings or a series like Jack Reacher?