I just stumbled upon an interesting experiment I conducted back in 2018 on the Halton sequence. Let me share it with you.
First, let's generate the 2D Halton sequence with bases 2 and 3, which means the sequence of points in the unit square where the x et y coordinates are the van der Corput sequences with bases 2 and 3. Then group the points into packs of 6 and color the first pack in red, the second pack in yellow, the third pack in red again, and so on. Here's what we get:
Not very random, is it?
Next, let's group the points into packs of 36 (6^2), and once again, alternate the color between red and yellow for each pack. Take a look at the result:
And here is what we get if we group the points into packs of 216 (6^3):
Quite surprising! (Maybe not, this is a deterministic sequence, after all.)
Finally, if we use four colours (red, yellow, orange, black) instead of two, we get a visually pleasing result: