Journal of Integer Sequences, Vol. 13 (2010), Article 10.1.2 |
Imre Kátai
Computer Algebra Department
Eötvös Lorand University
Pázmány Péter Sétány I/C
1117 Budapest
Hungary
Abstract:
Received August 31 2009; revised version received December 29 2009. Published in Journal of Integer Sequences, December 31 2009.