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A138006
Length of all the nontrivial cycles of the Ducci map for n in A138004.
1
3, 15, 7, 341, 819, 9709, 2047, 475107, 31, 3233097, 5461, 8388607, 3556769739, 31675383749, 65498251203, 575525617597, 34359738367, 549755813887, 182518930210733, 2047, 37905296863701641, 2251799813685247
OFFSET
1,1
COMMENTS
It appears that the maximum possible cycle length is n*(2^((n-1)/2)-1).
CROSSREFS
Cf. A135546.
Sequence in context: A102531 A377775 A135546 * A335696 A256557 A337471
KEYWORD
nonn
AUTHOR
T. D. Noe, Feb 26 2008
STATUS
approved