%I #3 Mar 30 2012 17:22:47
%S 17,41,73,97,109,113,137
%N Prime numbers n for which nontrivial cycles of the Ducci map do not all have the same length.
%Y Cf. A138004.
%K nonn,more
%O 1,1
%A _T. D. Noe_, Feb 26 2008
