Those are tiles which can represent each still life in conway game of life, i.e. they enforce constraints such that any tiling corresponds to a still life in Conway's Game of Life
For further details:
http://www.conwaylife.com/forums/viewtopic.php?f=7&t=2188
LifeTiles.jscad Can be viewed correctly with colors in:
http://openjscad.org/
Important You should 3d print in 2 colors. Check out the jscad file for the coloring scheme.
Important Copy/Paste the LifeTiles.jscad into the code editor - don't try to drug and drop it into the window.
To use the TileGenerator.py script (you'll need golly http://golly.sourceforge.net/)
LifeTiles.jscad | 17.7KB | |
LifeTiles.stl | 152.8KB | |
TileGenerator.jscad | 16.7KB | |
TileGenerator.py | 5.1KB | |
tiles.txt | 6.2KB |