OFFSET
1,1
COMMENTS
A cycle is called primitive if its elements are not a common multiple of the elements of another cycle.
The 3x-k function T_k is defined by T_k(x) = x/2 if x is even, (3x-k)/2 if x is odd.
For primitive cycles, GCD(k,6)=1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Geoffrey H. Morley, Jun 16 2013
STATUS
approved