A Generalization of the Fibonacci Word Fractal and the Fibonacci   Snowflake
  In this paper we introduce a family of infinite words that generalize the Fibonacci word and we study their combinatorial properties. Moreover, we associate to this family of words a family of curves, which have fractal properties, in particular these curves have as attractor the Fibonacci word fractal. Finally, we describe an infinite family of polyominoes (double squares) from the generalized Fibonacci words and we study some of their geometric properties. These last polyominoes generalize the Fibonacci snowflake. 
Jos\'e L. Ram\'irez, Gustavo N. Rubiano, Rodrigo de Castro
cs.DM math.CO