Search: id:A070667
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%I A070667
%S A070667 1,1,2,3,4,5,6,3,8,9,10,5,12,13,4,7,16,17,18,9,8,21,22,5,24,25,
%T A070667 26,13,28,11,30,15,10,33,6,17,36,37,14,9,40,13,42,21,19,45,46,7,
%U A070667 48,49,16,25,52,53,21,13,20,57,58,11,60,61,8,31,14,23,66,33,22
%N A070667 Smallest m in range 2..n-1 such that m^2 == 1 mod n, or 1 if no such 
               number exists.
%C A070667 If n has a primitive root (i.e. if n is in A033948(n)) then a(n)=n-1, 
               if not (i.e. if n is in A033949(n)), a(n)<n-1. E.g.: if n is of the 
               form 4*A000961(m), then a(n)=n/2-1. Questions : for which n does 
               the equation A070667(x)=x-n have at least one solution, does always 
               A070667(x)=x-p have at least one solution when p is prime =>5? - 
               Benoit Cloitre (benoit7848c(AT)orange.fr), May 12 2002
%Y A070667 Cf. A033948, A033949, A000961.
%Y A070667 Sequence in context: A070675 A096894 A097751 this_sequence A122416 A134665 
               A063260
%Y A070667 Adjacent sequences: A070664 A070665 A070666 this_sequence A070668 A070669 
               A070670
%K A070667 nonn
%O A070667 1,3
%A A070667 N. J. A. Sloane (njas(AT)research.att.com), May 08 2002

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