- Turkish Journal of Mathematics
- Vol: 44 Issue: 1
- Unimodality and linear recurrences associated with rays in the Delannoy triangle
Unimodality and linear recurrences associated with rays in the Delannoy triangle
Authors : Said Amrouche, Hacène Belbachir
Pages : 118-130
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Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :In this paper, we study the unimodality of sequences located in the infinite transversals of the Delannoy triangle. We establish recurrence relations associated with the sum of elements laying along the finite transversals of the cited triangle and we give the generating function of the established sum. Moreover, new identities for the odd and even terms of the Tribonacci sequence are given. Finally, we define a $q$-analogue for the Delannoy numbers and we propose a $q$-deformation of the Tribonacci sequence.Keywords : Delannoy triangle, log-concavity, unimodality, recurrence relations