Predict next number from a series was closed recently, amid a number of comments to the effect that the next term could be anything, etc., etc.

Unlike other questions that have been discussed before (see, e.g., http://meta.math.stackexchange.com/questions/924/guess-the-next-number-guess-the-relation-etc), the question did not present a particular sequence and ask for the next number, but asked more generally for methods to determine the next number in a given sequence. This is a serious question. Sequences of numbers come up all the time, and we often have good reason to believe that there is some systematic rule behind them, and we do have methods for working out what the systematic rule might be. There are several pages about this topic in Chapter 2 of Sloane's A Handbook of Integer Sequences.

I have voted to reopen the question, so we can have a chance to have some of those methods posted in reply.

  • $\begingroup$ +1. I have also voted to reopen the question. $\endgroup$
    – user17762
    May 16, 2012 at 1:19
  • $\begingroup$ I voted to reopen as well, as it seems like a clear enough question to me, but I have a nagging feeling that it's a duplicate of something asked a while back. edit: math.stackexchange.com/q/656/72 $\endgroup$
    – Isaac
    May 16, 2012 at 1:41
  • $\begingroup$ Although the question is vague and the OP nonresponsive so far, with Gerry's vision this has potential to become a good place to direct people with questions about particular sequences. $\endgroup$ May 16, 2012 at 2:30
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    $\begingroup$ Maybe Gerry could ask the question he envisions? $\endgroup$ May 16, 2012 at 2:44

1 Answer 1


The community has spoken: the question is now re-opened. (Posting this as an answer just so we can get it accepted so it won't be bumped to the front page in the future.)


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