/usr/share/k3d/lsystem/fractint4.ls is in k3d-data 0.8.0.3-3build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 | # --- L-System Parser/Mutator --- Lj Lapre ----------------------------------
# Koch1
4
60
10
&(90)+(90)F--F--F
F=F+F--F+F
@
|