Question 1038711: What should be the next number in the following series? 1 2 8 48 384 _ ?_
Answer by rothauserc(4718)   (Show Source):
You can put this solution on YOUR website! this is the double factorial of even numbers
:
(2n)!! = (2^n) * n!
:
begin with n = 0
:
a(0) = 1
a(1) = 2
a(2) = 8
a(3) = 48
a(4) = 384
a(5) = 3840
a(6) = 46080
:
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1, 2, 8, 48, 384, 3840, 46080
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