Pell Numbers whose Euler Function is a Pell Number
Number Theory
2015-08-25 v1
Abstract
In this paper, we show that the only Pell numbers whose Euler function is also a Pell number are 1 and 2.
Cite
@article{arxiv.1508.05714,
title = {Pell Numbers whose Euler Function is a Pell Number},
author = {Bernadette Faye and Florian Luca},
journal= {arXiv preprint arXiv:1508.05714},
year = {2015}
}
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