Results 71 to 80 of about 66,564 (179)

A New Generalization of Leonardo Sequences: Biperiodic Leonardo Sequence

open access: yesJournal of Mathematics, Volume 2025, Issue 1, 2025.
In this study, we define a new type of number sequence called biperiodic Leonardo sequence by the recurrence relation Lena,b=aLen−1+Len−2+1 (for even n) and Lena,b=bLen−1+Len−2+1 (for odd n) with the initial conditions Le0a,b=Le1a,b=1. We obtained the characteristic function, generating function, and Binet’s formula for this sequence and propose a ...
Hasan Gökbaş, Mohammad W. Alomari
wiley   +1 more source

Repdigits as Products of Consecutive Pell or Pell–Lucas Numbers

open access: yesIranian Journal of Mathematical Sciences and Informatics
Summary: A positive integer is called a repdigit if it has only one distinct digit in its decimal expansion. In this paper, we find all repdigits that are products of consecutive Pell or Pell-Lucas numbers. This paper continues previous work which dealt with finding occurrences of repdigits in the Pell and Pell-Lucas sequences.
Bravo, Eric F., Bravo, Jhon J.
openaire   +2 more sources

Genetic erosion in domesticated barley and a hypothesis of a North African centre of diversity

open access: yesEcology and Evolution, Volume 14, Issue 8, August 2024.
Barley cultivated 6 millennia ago was more diverse than extant cultivars and landraces. Private variants and chloroplast haplotypes indicate strong genetic erosion in North Africa and link together ancient barley, extant Ethiopian landraces and a rudimentary wild population of Cyrenaica.
Peter Civáň   +6 more
wiley   +1 more source

Generating Functions of Modified Pell Numbers and Bivariate Complex Fibonacci Polynomials

open access: yesTurkish Journal of Analysis and Number Theory, 2019
In this paper, we introduce a operator in order to derive a new generating functions of modified k- Pell numbers, Gaussian modified Pell numbers. By making use of the operator defined in this paper, we give some new generating functions for Bivariate ...
S. Boughaba   +2 more
semanticscholar   +1 more source

Convolutions of the generalized Pell and Pell-Lucas numbers

open access: yesFilomat, 2016
We consider the convolution of the generalized Pell numbers-P(s) n,m and the convolution of the generalized Pell-Lucas numbers-Q(s) n,m. For s = 0, the sequence P(0) n,m represents the generalized Pell numbers Pn;m, and the sequence Q(0) n,m represents the generalized Pell-Lucas numbers Qn,m ([1], [2]). For m = 2 and s = 0, the numbers P(0)
openaire   +1 more source

Mulatu Numbers as Products of Three Generalized Lucas Numbers

open access: yesMathematica Pannonica
Let 𝑀𝑘 be the 𝑘-th Mulatu number. Let 𝑟, 𝑠 be non-zero integers with 𝑟 ≥ 1 and 𝑠 ∈ {−1, 1}, let {𝑈𝑛}𝑛≥0 be the generalized Lucas sequence and {𝑉𝑛}𝑛≥0 its companion given respectively by 𝑈𝑛+2 = 𝑟𝑈𝑛+1 + 𝑠𝑈𝑛 and 𝑉𝑛+2 = 𝑟𝑉𝑛+1 + 𝑠𝑉𝑛, with 𝑈0 = 0, 𝑈1 = 1, 𝑉0 =
K. N. Adédji   +2 more
semanticscholar   +1 more source

Accidental Intraoperative Mandibular Fracture in a Third Molar Surgery: When Surgical Skills Are Mandatory in the Face of Empiricism. [PDF]

open access: yesCase Rep Dent, 2023
Pinho JNA   +5 more
europepmc   +1 more source

On $X$-coordinates of Pell equations which are repdigits

open access: yes, 2017
Let $b\ge 2$ be a given integer. In this paper, we show that there only finitely many positive integers $d$ which are not squares, such that the Pell equation $X^2-dY^2=1$ has two positive integer solutions $(X,Y)$ with the property that their $X ...
Faye, Bernadette, Luca, Florian
core  

Pell and Pell-Lucas numbers as sums of three repdigits

open access: yes, 2020
Same work has been study by another ...
Bhoi, Kisan   +2 more
openaire   +2 more sources

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