[seqfan] Re: Countdown to 2012

[Hans Havermann]

Harvey P. Dale: "Has anyone tried to implement a program in  
Mathematica that can take, e.g., the first ten integers and figure out  
different ways of combining them using different mathematical  
operators... to yield a given number?"

That's how I got my countdown. :)

I did this last year and wrote a little blurb about it here:

http://gladhoboexpress.blogspot.com/2011/01/countdown.html

It's fairly easy of course to alter the parameters of the program to  
count up, or otherwise restrict the number space.