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Three recurrences for parallelogram polyominoes |
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| Authors: | Robert A Sulanke: |
| Institution: | Boise State University , Boise, ID 83725, USA |
| Abstract: | |
| Keywords: | Parallelogram polyminoes Catalan numbers Narayana numbers Schröder numbers Square-triangular numbers 1991 Mathematics Subject Classication: 05A15 |