Results 31 to 40 of about 133 (87)

A repdigit számok néhány tulajdonsága

, 2023
A dolgozatban az úgynevezett repdigit számok néhány tulajdonságát vizsgáltuk meg. B-repdigit számoknak nevezzük azokat az egész számokat, amelyeknek minden számjegye megegyezik a B számrendszerben.
Csillag, Balázs
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Repdigits in Euler functions of associated pell numbers

Proceedings - Mathematical Sciences, 2020
Let \(\{Q_n\}\) denotes the sequence of numbers defined by \[ Q_0=1;~Q_1=1;~Q_{n+1}=2Q_n+Q_{n-1},~n\geq 1. \] Using elementary number theoretic notions, the following main result is proved: Theorem. Let \(d\in \{1,\ldots,9\}\) and \(m\in \mathbb{N}\).
Panda, G. K., Sahukar, M. K.
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Padovan numbers that are concatenations of two distinct repdigits [PDF]

Mathematica Slovaca, 2020
Abstract Let ( P n ) n ≥0 be the sequence of Padovan numbers defined by P
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On Diophantine Equations Related to Narayana’s Cows Sequence and Double Factorials or Repdigits

, 2022
In this paper, we determine all the Narayana’s cows numbers that are factorials or double factorials. We also show that 88 is the only repdigit (i.e., a class of numbers that has reflectional symmetry across a vertical axis) that can be written as ...
Peng Yang, Tianxin Cai, Yanjiao Ji
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Repdigits in Narayana's Cows Sequence and their Consequences

, 2020
Narayana's cows sequence satisfies the third-order linear recurrence relation $N_n=N_{n-1}+N_{n-3}$ for $n \geq 3$ with initial conditions $N_0=0$ and $N_1=N_2=1$. In this paper, we study $b$-repdigits which are sums of two Narayana numbers. We explicitly determine these numbers for the bases $2\le b\leq100$ as an illustration.
Bravo, Jhon J., Das, Pranabesh, Guzmán, Sergio   +2 more
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On repdigits powers in base beta

Lietuvos matematikos rinkinys, 2022
The article presents formulas for powers of repdigits in the different numeral systems. This task can be used as an exercise for computer science students to help them master the corresponding mathematical apparatus.
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Narayana numbers as products of three repdigits in base g

Acta et Commentationes Universitatis Tartuensis de Mathematica, 2023
In this paper, we show that there are only finitely many Narayana's numbers which can be written as a product of three repdigits in base g with g >= 2. Moreover, for 2 <= g <= 10, we determine all these numbers.    
Pagdame Tiebekabe, Kossi Richmond KAKANOU, Hamid Ben Yakkou   +2 more
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Patterns obtained from digit and iterative digit sums of Palindromic, Repdigit and Repunit numbers, its variants and subsets [PDF]

, 2016
The digit and iterative digit sums of Palindromic numbers, their primes and squares, repdigit, repunit, their squares and cubes produced different patterns and sequences.
Opanuga, Abiodun A., Adamu, M. O., Bishop, S.A., Okagbue, H. I.   +3 more
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Repdigits As Sums Of Two Lucas Numbers

, 2020
Bu yayının lisans anlaşması koşulları tam metin açık erişimine izin vermemektedir.Let (L-n) be the Lucas sequence defined by L-n = Ln-1 + Ln-2 for n >= 2 with initial conditions L-0 = 2 and L-1 = 1.
Keskin, Refik, Siar, Zafer
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On repdigits as product of consecutive Fibonacci numbers [PDF]

, 2012
Let (F$_{n}$)$_{n\geq0}$ be the Fibonacci sequence. In 2000, F. Luca proved that F10 = 55 is the largest repdigit (i.e. a number with only one distinct digit in its decimal expansion) in the Fibonacci sequence. In this note, we show that if Fn · · · F$
Marques, Diego, Togbé, Alain
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