Abbott, H. L.; Hanson, D. An extremal problem in number theory. (English) Zbl 0219.10065 Bull. Lond. Math. Soc. 2, 324-326 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 11B99 Sequences and sets 11N99 Multiplicative number theory PDFBibTeX XMLCite \textit{H. L. Abbott} and \textit{D. Hanson}, Bull. Lond. Math. Soc. 2, 324--326 (1970; Zbl 0219.10065) Full Text: DOI