[seqfan] empty polyomino?

jean-paul allouche jean-paul.allouche at imj-prg.fr
Thu Jun 25 19:14:54 CEST 2020


If a publication is a justification (I of course agree), open 
type "empty polyomino" (with quotes), and contemplate...
An amusing point is that one of the paper says: "where we assume that w is
the contour of a non-empty polyomino" :-)


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