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%I #3 Mar 30 2012 17:26:58
%S 1,3,4,12,70,90,210
%N Numbers n such that in Z/nZ the number of squares is equal to the number of invertible elements.
%F n such that A000224(n) = A000010(n)
%Y Cf. A122904, A122905, A122906, A122907.
%K fini,full,nonn
%O 1,2
%A _Max Alekseyev_, Sep 18 2006
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