I'm coming back to my previous post, because after months of looking, I found a way to do the same, but with 2n+1 x 2n+1 squares. I'm not showing you how because it is really easy. You pretty much just put four blocks in a 9 x 9 square.
The only reason I just post about it now is because I haven't been doing anything life-related for months. Hopefully I'll pick it up again now.
Elias
