On the 3-state Mealy Automata over an m-symbol Alphabet of Growth Order   [ n ^{{\log n}/{2 \log m}} ]
  We consider the sequence ${J_m,m \ge 2}$ of the 3-state Mealy automata over an m-symbol alphabet such that the growth function of $J_m$ has the intermediate growth order $[n ^{{\log n}/{2 \log m}} ]$. For each automaton $J_m$ we describe the automaton transformation monoid $S_{J_m}$, defined by it, provide generating series for the growth functions, and consider primary properties of $S_{J_m}$ and $J_m$. 
Illya I. Reznykov, Vitaliy I. Sushchansky