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Abstract
In this paper, we study tilings of annular regions in the integer lattice by skew and
T-tetrominoes. We demonstrate the tileability of most annular regions by the
given tile set, enumerate the tilings of width-2 annuli, and determine the
tile counting group associated to this tile set and the family of all width-2
annuli.
Keywords
tilings, tile counting group, annular regions, integer
lattice, skew and T-tetrominoes
Mathematical Subject Classification 2010
Primary: 52C20
Milestones
Received: 23 February 2016
Accepted: 31 May 2016
Published: 14 December 2016
Communicated by Arthur T. Benjamin
© 2017 MSP (Mathematical Sciences
Publishers).