A function periodic with period  such that
for all 
 is said to be Möbius periodic.
 
	    
	
    
A function periodic with period  such that
for all 
 is said to be Möbius periodic.
Weisstein, Eric W. "Möbius Periodic Function." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/MoebiusPeriodicFunction.html