%I A143663
%S A143663 2,1,13,5,11,7,1093,41,757,61,23,73,797161,547,4561,17,1871,19,1597,
%T A143663 1181,368089,67,47,6481,8951,398581,109,29,59,31,683,21523361
%N A143663 a(n) is the least prime such that the multiplicative order of 3 mod a(n) 
               equals n, or a(n)=1 if such prime does not exist.
%C A143663 If a(n) differs from 1, then a(n) is the minimal prime divisor of A064079(n).
%Y A143663 Cf. A002326 A064079.
%Y A143663 Sequence in context: A007418 A037271 A074955 this_sequence A064079 A167584 
               A112226
%Y A143663 Adjacent sequences: A143660 A143661 A143662 this_sequence A143664 A143665 
               A143666
%K A143663 nonn
%O A143663 1,1
%A A143663 Vladimir Shevelev (shevelev(AT)bgu.ac.il), Aug 28 2008