%I
%S 0,0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%T 0,0,0,0,0,0,0,2,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
%U 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
%N Number of solutions of EulerPhi(x) = 12n + 2.
%e Among the first 10000 cases, only 16 invphi(12j + 2) set are nonempty, always with 2 terms. E.g., n = 8034, a(8034) = 2 because 12*8034 + 2 = 96410 and invphi(96410) = {96721,193442}.
%p with(numtheory): [seq(nops(invphi(2+12*j)),j=1..10000)];
%Y A000010, A002202, A005277.
%K nonn
%O 1,9
%A _Labos Elemer_, Aug 22 2001
