Narayana numbers that are products of two Fibonacci numbers
Narayana numbers that are products of two Fibonacci numbers
Let $\{N_m\}_{m\ge0}$ be the Narayana's cows sequence given by $N_0=0$, $N_1=1=N_2=1$ and \[ N_{m+3}=N_{m+2}+N_m,\quad \text{ for }\; m\geq 0 \] and let $\{F_n\}_{n\ge0}$ be the Fibonacci sequence. In this paper we solve explicitely the Diophantine equation \[ N_m=F_nF_k, \] in positive unknowns $m,\,n$ and $k$. That is, we find the non-zero narayana numbers that are products of two Fibonacci numbers.
Japhet Odjoumani
数学
Japhet Odjoumani.Narayana numbers that are products of two Fibonacci numbers[EB/OL].(2025-07-23)[2025-08-16].https://arxiv.org/abs/2508.02688.点此复制
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