Results 61 to 70 of about 2,007,514 (150)
Pell and Pell-Lucas numbers of the form $-2^a-3^b+5^c$ [PDF]
, 2020 summary:In this paper, we find all Pell and Pell-Lucas numbers written in the form $-2^a-3^b+5^c$, in nonnegative integers $a$, $b$, $c$, with $0\leq \max \{a,b\}\leq c$
Qu, Yunyun, Zeng, Jiwen
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Journal of Engineering Education, Volume 115, Issue 4, October 2026.Abstract Background Developing effective learning strategies is essential for first‐year engineering students due to the rigorous and complex nature of the discipline. During this formative stage, constructivist learning environments (CLEs), self‐efficacy, and mindsets are pivotal in shaping how students engage with challenges and develop adaptive ...
Chengcheng Li +4 more
wiley +1 more source
GeoHealth, Volume 10, Issue 10, October 2026.Abstract Childhood lead exposure causes irreversible neurodevelopmental harm, and no safe blood lead level in children has been identified. Measured childhood blood lead is collected unevenly across the United States, and many areas publish no neighborhood‐level surveillance, so the children at highest risk are often the hardest to find by measurement.
Eric C. Ritter
wiley +1 more source
ON GENERALIZED SIXTH-ORDER PELL SEQENCES [PDF]
, 2020 In this paper, we investigate the generalized sixth order Pell sequences and we deal with, in detail, three special cases which we call them as sixth order Pell, sixth order Pell-Lucas and modified sixth order Pell ...
Yüksel SOYKAN, SOYKAN, Yüksel
core +1 more source
On Pell, Pell-Lucas, and balancing numbers
, 2018 In this paper, we derive some identities on Pell, Pell-Lucas, and balancing numbers and the relationships between them. We also deduce some formulas on the sums, divisibility properties, perfect squares, Pythagorean triples involving these numbers ...
Gül Karadeniz Gözeri
core +2 more sources
On the Usual Fibonacci and Generalized Order-K Pell Numbers
, 2008 In this. paper, we give some relations involving the usual Fibonacci and generalized order-k Pell numbers. These relations show that the generalized order-k Pell numbers can be expressed as the summation of the usual Fibonacci numbers.
Kılıç, Emrah
core
On the generalized k-Pell (p, i)-numbers
, 2015 WOS:000351784600021The current article focus on the generalized k-Pell (p, i)-numbers for k = 1, 2, ... and 0
Arı, Kamil
core
The generalized order-k Fibonacci–Pell sequence by matrix methods
, 2007 In this paper, we consider the usual and generalized order-k Fibonacci and Pell recurrences, then we define a new recurrence, which we call generalized order-k F–P sequence.
Kilic, Emrah
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Generalized Fibonacci Numbers: Sum Formulas
, 2020 In this paper, closed forms of the summation formulas for generalized Fibonacci numbers are presented. As special cases, we give summation formulas of Fibonacci, Lucas, Pell, Pell-Lucas, Jacobsthal, Jacobsthal-Lucas numbers.
Yüksel Soykan
core +1 more source
Relationships Between Generalized Bernoulli Numbers and Polynomials and Generalized Euler Numbers and Polynomials [PDF]
, 2002 In this paper, concepts of the generalized Bernoulli and Euler numbers and polynomials are introduced, and some relationships between them are ...
Qi, Feng, Luo, Qiu-Ming
core +3 more sources