Formulae for Polyominoes on Twisted Cylinders

  • Gadi Aleksandrowicz
  • Andrei Asinowski
  • Gill Barequet
  • Ronnie Barequet
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8370)


Polyominoes are edge-connected sets of cells on the square lattice ℤ2. We investigate polyominoes on a square lattice embedded on so-called twisted cylinders of a bounded width (perimeter) w. We prove that the limit growth rate of polyominoes of the latter type approaches that of polyominoes of the former type, as w tends to infinity. We also prove that for any fixed value of w, the formula enumerating polyominoes on a twisted cylinder of width w satisfies a linear recurrence whose complexity grows exponentially with w. By building the finite automaton that “grows” polyominoes on the twisted cylinder, we obtain the prefix of the sequence enumerating these polyominoes. Then, we recover the recurrence formula by using the Berlekamp-Massey algorithm.


Recurrence formula transfer matrix generating function 


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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Gadi Aleksandrowicz
    • 1
  • Andrei Asinowski
    • 2
  • Gill Barequet
    • 1
  • Ronnie Barequet
    • 3
  1. 1.Dept. of Computer ScienceTechnion—Israel Institute of TechnologyHaifaIsrael
  2. 2.Institut für InformatikFreie Universität BerlinBerlinGermany
  3. 3.Dept. of Computer ScienceTel Aviv UniversityTel AvivIsrael

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