Interesting problem but tests are too tricky.
I am not sure that a list of equal numbers qualifies as a series. Would it be a geometric or an arithmetic series?
'Randperm' is making this question a whole lot harder...
Television Screen Dimensions
Reference Index Number
Narcissistic number ?
Recaman Sequence - II
Beauty of Parentheses
Tribute to Ramanujan
Generate Square Wave
Cat, Meowcat and Concatenation
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