On a Variant of Giuga Numbers  

作　　者：Jos María GRAU Florian LUCA Antonio M. OLLER-MARCN 

机构地区：[1]Departmento de Matemáticas, Universidad de Oviedo, Avda. Calvo Sotelo s/n [2]Instituto de Matemáticas, Universidad Nacional Autnoma de México [3]The John Knopfmacher Centre for Applicable Analysis and Number Theory, University of the Witwatersrand [4]Centro Universitario de la Defensa, Academia General Militar, Ctra. Huesca s/n

出　　处：《Acta Mathematica Sinica,English Series》2012年第4期653-660,共8页数学学报（英文版）

摘　　要：In this paper, we characterize the odd positive integers n satisfying the congruence ∑j=1^n-1 j n-1/2 We show that the set of such positive integers has an asymptotic densitywhich turns out to be slightly larger than 3/8.In this paper, we characterize the odd positive integers n satisfying the congruence ∑j=1^n-1 j n-1/2 We show that the set of such positive integers has an asymptotic densitywhich turns out to be slightly larger than 3/8.

关 键 词：CONGRUENCE Giuga numbers asymptotic density 

分 类 号：O156[理学—数学]