what is the explicit formula for the sequence -1, -2/3, -3/7, -4/7

Question

I need the explicit formula of the sequence -1, -2/3, -3/7, -4/7

Answer 1

I think you mean that your sequence is -1, -2/3, -3/5, -4/7

 

If so, then your formula is

 

-n/(2n - 1)

 

where n = 1, 2, 3, 4.