Customized version of https://www.thingiverse.com/thing:5189611

Created with Customizer! https://www.thingiverse.com/apps/customizer/run?thing_id=5189611

Using the following options:

size = 25
die = 10
roundness = 0.15
letter_ratio = .1
depth_ratio = .03
sides = [1, 2, 4, 8, 16, 32, 64, 128, 256, 512]
$fn = 20
kite = .052
angular_fudge = 3
radial_fudge = .125