Narayana numbers as sums of two base b repdigits
Prasanta Kumar Ray, Kisan Bhoi, Bijan Kumar Patel · Acta et Commentationes Universitatis Tartuensis de Mathematica · 2022
In this study, we find all Narayana numbers which are expressible as sums of two base b repdigits. The proof of the main result uses lower bounds for linear forms in logarithms of algebraic numbers and a version of the Baker–Davenport reduction method.