Re: Find (cyclic) Sequence

*To*: mathgroup at smc.vnet.net*Subject*: [mg109344] Re: Find (cyclic) Sequence*From*: Albert Retey <awnl at gmx-topmail.de>*Date*: Thu, 22 Apr 2010 06:44:02 -0400 (EDT)*References*: <hqou0k$9fp$1@smc.vnet.net>

Hi, > Consider the following sequence {0,3,2,1} which can be related to the > reference k: {0,1,2,3} as 4-k (mod 4). > > I've tried to use FindSequenceFunction on problems like the example > above without success. > I understand I'm working within the context of modular arithmetic... > Does anyone have a suggestion on how to use Mathematica to tackle this > problem? I think you would just need to repeat your sequence to make Mathematica understand, obviously the task for FindSequenceFunction is a easier when the sequences you feed it are longer: FindSequenceFunction[{0, 4, 3, 2, 1, 0, 4, 3, 2, 1}] gives: Mod[1 + 4 #1, 5] & hth, albert