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Basic knowledge (Posted on 2006-01-10) Difficulty: 4 of 5
What is the next number in this sequence?

10, 20, 120, 440, 3200, 20460, 116600, 612700...

What is the general rule behind the sequence?

Hint: This sequence starts in n=2. A computer will probably not be able to solve it, but you're welcome to try.

See The Solution Submitted by Alexis    
Rating: 5.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts Solution To Part I | Comment 4 of 5 |
The required next number is 3628800.
  Posted by K Sengupta on 2008-04-18 15:50:02
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