The limiters state: This week's challenge will be fun for everyone, but especially for all the number nerds out there (you know who you are ).
There are no variation restrictions this week. Your weights, variables, and variations all must include only twos. So if you use linear in your fractal its variation amount needs to be something along the lines of 0.2, 0.222, 2, 22.2 etc. The same for your weights on each transform.
To make this a little more challenging (it is a challenge after all, right?) you must use multiples of two for your transforms...basically an even number of transforms. So 2, 4, 6, 8, 10 etc.