OFFSET
1,2
COMMENTS
Also numbers k that divide A060640(k). - Seiichi Manyama, May 08 2021
LINKS
Michel Marcus, Table of n, a(n) for n = 1..64
PROG
(PARI) for(n=1, 10^7, if(frac(sumdiv(n, d, sigma(d)/d))==0, print1(n, ", ")))
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Apr 06 2002
EXTENSIONS
More terms from Jason Earls, Apr 09 2002
a(22)-a(25) from Jinyuan Wang, Apr 06 2020
a(26)-a(32) from Michel Marcus, Apr 06 2020
STATUS
approved