Question

Can't seem to find the closed form of the following series:

1/3, 2/5, 6/7, 24/9, 120/11, 720/13, ...

Appreciate any help.

Answer 1

the denominator is clear enough, the numerators looks like factorials

Answer 2

yeah, the denominator is 2n + 1, but im having trouble with the numerator

Answer 3

i think the numerator is \(n!\)

Answer 4

shows you what i know

Answer 5

actually i am going to stick with my answer i think

Answer 6

thanks satellite73

Answer 7

i see it now

Answer 8

i love hindsight :) everything is so clear

Answer 9

(n!) / (2n + 1) works

Answer 10

like you said, haha

Answer 11

yeah you have it i still didn't get it right