(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

What is the next number in the following series?

1 2 12 48 216 936 4104 17928 78408 342792 ____________

2. Relevant equations

I haven't any idea

3. The attempt at a solution

power's of two, powers of three, prime numbers. I am beat

it can be found on this test --->http://www.mental-testing.com/

Mod's, I am sorry if this is in the wrong sub-directory. I couldn't figure out where else to put it.

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# Found a series problem online, extremely hard to solve. help

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