Catalan triangles and Finucan’s hidden folders

A. G. Shannon
Notes on Number Theory and Discrete Mathematics
Print ISSN 1310–5132, Online ISSN 2367–8275
Volume 22, 2016, Number 2, Pages 10—16
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Authors and affiliations

A. G. Shannon
Faculty of Engineering & IT, University of Technology, Sydney, NSW 2007, Australia
Campion College, PO Box 3052, Toongabbie East, NSW 2146, Australia


This note is to capture and extend some of Finucan’s ideas for further exploration by students. These ideas connect with several elementary concepts in combinatorial analysis which lend themselves to undergraduate research projects.


  • Catalan numbers and polynomials
  • Young tableaux
  • Fibonacci numbers
  • Recurrence relations

AMS Classification

  • 11B39
  • 11K31
  • 11B83
  • 05A15


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Cite this paper

Shannon, A. G. (2016). Catalan triangles and Finucan’s hidden folders. Notes on Number Theory and Discrete Mathematics, 22(2), 10-16.

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