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A138005
Prime numbers n for which nontrivial cycles of the Ducci map do not all have the same length.
1
17, 41, 73, 97, 109, 113, 137
OFFSET
1,1
CROSSREFS
Cf. A138004.
Sequence in context: A141174 A007519 A163185 * A267421 A166147 A028886
KEYWORD
nonn,more
AUTHOR
T. D. Noe, Feb 26 2008
STATUS
approved