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%I #3 Oct 15 2013 22:32:33
%S 401,451,489,491,505,513,567,577,629,631,652,661,673,679,685,691,713,
%T 731,737,751,757,769,773,791,802,808,811,817,825,829,833,847,851,853,
%U 859,867,869,871,873,877,889,893,899,901,902,907,911,917,919,923,931
%N Initial values for f(x)=sigma(phi[x])=A062402[x] such that iteration of f ends in cycle of length=4.
%Y Cf. A062402, A096926.
%K nonn
%O 1,1
%A _Labos Elemer_, Jul 19 2004
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