Solving a Recursive Sequence in Sequence App

[Joe Horn]

(11-21-2014 01:48 AM)maxlockett619 Wrote:  Thanks for the replies. That solved my problems. In addition, do you know of any apps that you can download where you can input a sequence and be given a rule back? Thanks.

I often "cheat" by looking it up in the Online Encyclopedia of Integer Sequences. Just type in a section of any sequence, and it identifies it, usually in both recursive and direct forms (jump down the page to the "FORMULA" section). Very cool, especially when the relationship between the recursive and direct formulae is utterly mysterious.

Caution: Browsing OEIS is known to be addictive.