A modificaction of the first five iterations of the Koch's (c) by changing parameters cut1 and cut2 from 1/3 and 2/3 to 1/5 and 4/5, respectively.     
  Part of: Briz-Redón Á, Serrano-Aroca Á (2018) Novel pedagogical tool for simultaneous learning of plane geometry and R programming. Research Ideas and Outcomes 4: e25485. https://doi.org/10.3897/rio.4.e25485