Polynomial Generalizations and Combinatorial Interpretations for Sequences Including the Fibonacci and Pell Numbers

Cecília Pereira de Andrade, José Plínio de Oliveira Santos, Elen Viviani Pereira da Silva, Kênia Cristina Pereira Silva

Universidade Estadual de Campinas, Campinas-SP, S?o Paulo, Brazil.

DOI: 10.4236/ojdm.2013.31006                

Abstract

In this paper we present combinatorial interpretations and polynomials generalizations for sequences including the Fibonacci numbers, the Pell numbers and the Jacobsthal numbers in terms of partitions. It is important to mention that results of this nature were given by Santos and Ivkovic in two papers published on the Fibonacci Quarterly, Polynomial generalizations of the Pell sequence and the Fibonacci sequence [1] and Fibonacci Numbers and Partitions [2] , and one, by Santos, on Discrete Mathematics, On the Combinatorics of Polynomial generalizations of Rogers-Ramanujan Type Identities [3]. By these results one can see that from the q-series identities important combinatorial information can be obtained by a careful study of the two variable function introduced by Andrews in Combinatorics and Ramanujan's lost notebook [4].

Keywords

Partitions; Fibonacci Numbers; Pell Numbers; Jacobsthal Numbers; q-Analog

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	J. P. O. Santos and M. Ivkovic, “Polynomial Generalizations of the Pell Sequence and the Fibonacci Sequence,” The Fibonacci Quarterly, Vol. 43, No. 4, 2005, pp. 328-338.
[2]	J. P. O. Santos and M. Ivkovic, “Fibonacci Numbers and Partitions,” The Fibonacci Quarterly, Vol. 41, No. 3, 2003, pp. 263-278.
[3]	J. P. O. Santos, “On the Combinatorics of Polynomial Generalizations of Rogers-Ramanujan-Type Identities,” Discrete Mathematics, Vol. 254, No. 1-3, 2002, pp. 497-511. doi:10.1016/S0012-365X(01)00378-8
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[5]	J. P. O. Santos, “Computer Algebra and Identities of the Rogers-Ramanujan Type,” Ph.D. Thesis, Pennsylvania State University, University Park, 1991.
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[7]	L. J. Slater, “A New Proof of Roger’s Transformations of Infinite Series,” Proceedings London Mathematical Society, Vol. s2-53, No. 1, 1951, pp. 460-475. doi:10.1112/plms/s2-53.6.460
[8]	A. V. Sills. “RRtools—A Maple Package for Aiding the Discovery and Proof of Finite Rogers-Ramanujan Type Identities,” Journal of Symbolic Computation, Vol. 37, No. 4, 2004, pp. 415-448. http://math.georgiasouthern.edu/asills/maple/RRtools1