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A138005 Prime numbers n for which nontrivial cycles of the Ducci map do not all have the same length. 1

%I

%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

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Last modified July 22 14:52 EDT 2019. Contains 325224 sequences. (Running on oeis4.)