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%I #5 Oct 15 2013 22:30:27
%S 0,0,2,2,2,4,2,2,2,4,2,4,2,4,3,2,2,4,2,4,3,4,2,4,2,4,2,4,2,6,2,2,3,4,
%T 3,4,2,4,3,4,2,6,2,4,3,4,2,4,2,4,3,4,2,4,3,4,3,4,2,6,2,4,3,2,3,6,2,4,
%U 3,6,2,4,2,4,3,4,3,6,2,4,2,4,2,6,3,4,3,4,2,6,3,4,3,4,3,4,2,4,3,4,2,6,2,4,5
%N Take reduced residue systems of n, generate its first differences, dRRS(n); sequence gives maximal value of dRSSS(n).
%C Greatest values occur at primorial numbers (A002110).
%e If n is prime, its reduced residue system consists of all numbers below n. But the difference 2 arises from d=1-(n-1)=-n+2 (mod n).
%Y Cf. A048670. Essentially same as A048669.
%K nonn
%O 1,3
%A _Labos Elemer_
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