Title

The valuation tree for n2+7

Document Type

Article

Publication Date

2020

Publication Title

SCIENTIA Series A: Mathematical Sciences

Abstract

The 2-adic valuation of an integer x is the highest power of 2 which
divides x. It is denoted by ν2(x). The goal of the present work is to describe the
sequence {ν2(n2+ a)}for 1 6a 67. The first six cases are elementary. The last
case considered here, namely a = 7, presents distinct challenges. It is shown here
how to represent this family of valuations in the form of an infinite binary tree,
with two symmetric infinite branches.

Volume

30

First Page

91

Last Page

102

ISSN

0716-8446


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