OFFSET
1,1
COMMENTS
Trajectory of n under map k -> A111273(k) is periodic with period length 3.
Apparently A111273 has infinitely many 3-cycles.
The only k-cycles with k > 3 and terms < 240000 are the 4-cycles (84326,126489,149487,91992) and (94138,98417,135761,141207), the 6-cycle (4,5,15,8,6,7), the 7-cycle (16,17,51,34,35,30,31) and the 13-cycle (28,29,87,58,59,118,119,68,46,47,94,95,48).
EXAMPLE
CROSSREFS
KEYWORD
nonn
AUTHOR
Klaus Brockhaus, Nov 08 2005
STATUS
approved