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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 (list; graph; refs; listen; history; text; internal format)
 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 Adjacent sequences:  A008894 A008895 A008896 * A008898 A008899 A008900 KEYWORD nonn AUTHOR STATUS approved

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Last modified February 21 04:55 EST 2020. Contains 332086 sequences. (Running on oeis4.)