A368115 - OEIS

A368115

Trajectory of 17 under the '17x+1' map.

17, 290, 145, 29, 494, 247, 19, 324, 162, 81, 27, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1, 18, 9, 3, 1

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OFFSET

0,1

COMMENTS

See A368085 for definition and cross references.

LINKS

Table of n, a(n) for n=0..77.

Index entries for linear recurrences with constant coefficients, signature (0,0,0,1).

MATHEMATICA

Module[{lpf}, NestList[If[1 < (lpf = FactorInteger[#][[1, 1]]) < 17, #/lpf, #*17 + 1] &, 17, 100]] (* Paolo Xausa, Feb 13 2026 *)

CROSSREFS

Cf. A368085.