A simple example of an infinite series of substitutions with tilings of statistical circular symmetry. It is shown in [Frettloeh:STWCS not found], that all tilings in this series posses statistical circular symmetry. The substitution factors are $s2m$
, where s is the largest root of $xm-xk-1$
. Each pair of integers $(m,k)$
, where $m>k, m>2, k>0$
, encodes a such a Pythia substitution. The case $m=4, k=2$
yields the golden pinwheel substitution.