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A008897
x->x/2 if x even, x->3x-1 if x odd.
0
83, 248, 124, 62, 31, 92, 46, 23, 68, 34, 17, 50, 25, 74, 37, 110, 55, 164, 82, 41, 122, 61, 182, 91, 272, 136, 68, 34, 17, 50, 25, 74, 37, 110, 55, 164, 82, 41, 122, 61, 182, 91, 272, 136, 68, 34, 17, 50, 25, 74, 37
OFFSET
0,1
COMMENTS
Modified Collatz sequence beginning with 83 and using 3x-1 rather than 3x+1 for odd terms. [From Harvey P. Dale, May 08 2012]
REFERENCES
R. K. Guy, Unsolved Problems in Number Theory, E16.
LINKS
Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1).
MATHEMATICA
NestList[If[EvenQ[#], #/2, 3#-1]&, 83, 60] (* Harvey P. Dale, May 08 2012 *)
CROSSREFS
Sequence in context: A033253 A141933 A238680 * A159071 A023284 A142025
KEYWORD
nonn
AUTHOR
STATUS
approved