Or 100% money back. It's a number sequence.
8
11
94
58
10
49
57
404
1272
8699
3292
3332
48033
90311
112817
1149731
24909936
1838500
5264650
29232231
76236585
64535680
49758988
191873638
1718045848 (this one took 6 minutes to compute)
...
I realize this is a toughie so here are some hints/specifics:
1. I chose to start it at 8 for convenience, but any number will work. Be wary though, certain numbers get the sequence into a loop.
2. Each number in the sequence is represented in two ways: as a string and as a number. Each following term is derived by considering the chosen term as a string, and the next term as a number (and then applying a certain algorithm of course). For example, the string "0319" has a corresponding next numeric term (which happens to be 23149), but it has no previous term (unless you're willing to let the numerical representation be 319, but that's cheating). Therefore, not all strings (ones that begin with a 0) can be in the sequence, but (I think) all numbers can.
3. The numbers get progressively harder and harder to compute, but there IS the possibility of it "collapsing" back to a small number (such as 192 or something), or even going back to the original number (thus going into a loop).
4. At first I chose 0 as the first number. Then I entered the sequence into Google to make sure you couldn't get it from there. You can. So I used 8.
That should be plenty of hints. In case you want to know, it took me 6 minutes to compute the last term using a computer program. Actually, programming abilities and a certain text file (you will need some outside information) are highly recommended, but if you knack your brains and try everything, you stand a chance too.
Have...err...fun!
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