Latex in Blogger

I have searched many many hours for a good way to display maths in Blogger. I have found no perfect solution yet. My current solution (used in my previous post) is to use the Codecogs engine. I place an image tag in the html that points to the engine and which contains my latex code, as in this example

<img src="http://latex.codecogs.com/png.latex?F(x) = 1 – \left(\frac{k}{x}\right)^a" />

which gives




I do not like the dependence on an external server (which may shut down in the future). If anyone has a better solution please let me know.