- PP2003, held at the University of Otago in Dunedin, New Zealand
Plenary speaker: Herbert Wilf
Special Issue:: Electronic Journal of Combinatorics 9 (2), 2002–2003. - PP2004, held at Malaspina University-College in Nanaimo, British Columbia, Canada
Plenary speakers: Miklós Bóna and Gabor Tardos - PP2005, held at the University of Florida in Gainesville, Florida
Plenary speaker: Doron Zeilberger
Special Issue: : Advances in Applied Mathematics 36 (2), 2006. - PP2006, held at Reykjavik University in Reykjavik, Iceland
Plenary speaker: Michael Albert
Special Issue:Annals of Combinatorics 11 (3–4), 2007. - PP2007, held at the University of St Andrews in St Andrews, Scotland
Plenary speakers: Mike Atkinson and Martin Klazar
Special Issue: Permutation Patterns, LMS Lecture Note Series 376, 2010. - PP2008, held at the University of Otago in Dunedin, New Zealand
Plenary speaker: Mireille Bousquet-Mélou
Special Issue:Annals of Combinatorics, 14 (1), 2010. - PP2009, held at the University of Firenze in Florence, Italy
Plenary speaker: Einar Steingrímsson
Special Issue: Pure Mathematics and Applications, 21 (2), 2010. - PP2010, held at Dartmouth College in Hanover, New Hampshire
Plenary speakers: Nik Ruškuc and Richard Stanley
Special Issue: Pure Mathematics and Applications, vol 22 (2), 2011. PP2011, held at California Polytechnic State University, San Luis Obispo
Plenary speakers: Igor Pak and Jeff Remmel
Special Issue: Pure Mathematics and Applications.- PP2012, held at University of Strathclyde, Glasgow, Scotland
Plenary speakers: Vince Vatter.
Special Issue: Pure Mathematics and Applications