Integral Test: What should I compare this series with to prove it's convergence?

[theBEAST]

Homework Statement

Here is the problem:
http://dl.dropbox.com/u/64325990/HW%20Pictures/integraltest.PNG

The Attempt at a Solution

I know it is convergent because it is very similar to 1/n^1.5 which is convergent as well. However what would I compare this with using the Integral Test to prove that it is convergent?

 

[Dick]

Homework Statement

Here is the problem:
http://dl.dropbox.com/u/64325990/HW%20Pictures/integraltest.PNG

The Attempt at a Solution

I know it is convergent because it is very similar to 1/n^1.5 which is convergent as well. However what would I compare this with using the Integral Test to prove that it is convergent?

Compare it with $\frac{\sqrt{2n+2n}}{n^2}$. Then it's even more similar to 1/n^(1.5).