The

**explicit formula**(assuming the sequence begins with a_{1}) is:**a**

_{n}= (1/2)(n!)Soju H.

asked • 02/19/18what's the explicit formula to the sequence 1/2 , 1 , 3 , 12 , 60 , 360 , 2520 , ...?

Multiplies by one larger number each time but how to put that into an explicit formula?

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The **explicit formula** (assuming the sequence begins with a_{1}) is:

Andrew M. answered • 02/19/18

Tutor

New to Wyzant
Mathematics - Algebra a Specialty / F.I.T. Grad - B.S. w/Honors

Check:

a_{1} = 1/2

a_{2} = (1/2)(2) = 1

a_{3} = 1(3) = 3

a_{4} = 3(4) = 12

a_{5} = 12(5) = 60

a_{6} = 60(6) = 360

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David W.

_{n}depends on a_{n-1}, it is therecursiveformula.02/19/18