Based on the lead of the Anet A8 Z-Axis leadscrews (8mm - each full rotation moves the Z-Axis 8mm), the Z-Motor steps per revolution (200), and this calculator, we can calculate the list of optimal layer heights: 0.08, 0.12, 0.16, 0.20, 0.24, 0.28, 0.32 etc. - in increments of 0.04mm. The leadscrews are T8 - with lead 8mm, pitch 2mm and 4 screw threads.
Note to editors: discuss here before changing.