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Title: On perfect powers in $k$-generalized Pell sequence (English)
Author: Şiar, Zafer
Author: Keskin, Refik
Author: Öztaş, Elif Segah
Language: English
Journal: Mathematica Bohemica
ISSN: 0862-7959 (print)
ISSN: 2464-7136 (online)
Volume: 148
Issue: 4
Year: 2023
Pages: 507-518
Summary lang: English
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Category: math
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Summary: Let $k\geq 2$ and let $(P_{n}^{(k)})_{n\geq 2-k}$ be the $k$-generalized Pell sequence defined by \begin {equation*} P_{n}^{(k)}=2P_{n-1}^{(k)}+P_{n-2}^{(k)}+\cdots +P_{n-k}^{(k)} \end {equation*}for $n\geq 2$ with initial conditions \begin {equation*} P_{-(k-2)}^{(k)}=P_{-(k-3)}^{(k)}=\cdots =P_{-1}^{(k)}=P_{0}^{(k)}=0,P_{1}^{(k)}=1. \end {equation*}In this study, we handle the equation $P_{n}^{(k)}=y^{m}$ in positive integers $n$, $m$, $y$, $k$ such that $k,y\geq 2,$ and give an upper bound on $n.$ Also, we will show that the equation $P_{n}^{(k)}=y^{m}$ with $2\leq y\leq 1000$ has only one solution given by $P_{7}^{(2)}=13^{2}.$ (English)
Keyword: Fibonacci and Lucas numbers
Keyword: exponential Diophantine equation
Keyword: linear forms in logarithms
Keyword: Baker's method
MSC: 11B39
MSC: 11D61
MSC: 11J86
DOI: 10.21136/MB.2022.0033-22
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Date available: 2023-11-23T12:36:35Z
Last updated: 2023-11-23
Stable URL: http://hdl.handle.net/10338.dmlcz/151971
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