# Series and Sequences

• July 1st 2010, 09:00 AM
abel2
Series and Sequences
Ok, first a really simple sequence, but for some reason this online page isn't accepting it.

Find a formula for the general term an of the sequence, assuming that the pattern of the first few terms continues. http://www.webassign.net/cgi-bin/sym...0text%28%7D%29

I'm putting in 5/(4^n) but it's not taking it. Either this input is messed up, or i'm missing something elementary.
• July 1st 2010, 09:49 AM
Plato
Try $a_n=\displaystyle\frac{5}{4^{n-1}}$.
• July 1st 2010, 09:54 AM
abel2
Ahh, yes. I was assuming n=0, but I guess I shouldn't assume anything