## Kolakoski-(3,1) variant B, with dual

### Info

The substitution $a \rightarrow abcc, b \rightarrow a, c \rightarrow bc$
is a member of the MLD class of the Kolakoski-(3,1) sequence. The scaling factor
$\lambda \approx $ 2.20557 is the largest root of $x^3-2x^2-1=0$.

This substitution has a simple dual,
with three mildly fractal tiles, which are all similar to each other.
The dual substitution scales by about 1.485, and rotates clockwise by
about 81.22°.

### Dual Substitution Rule

### Dual Patch