OFFSET
1,1
EXAMPLE
84 is in the sequence because sigma(84)/84=224/84=2+2/3
270 is in the sequence because sigma(270)/270=720/270=2+2/3
CROSSREFS
KEYWORD
nonn
AUTHOR
J.C.Klein (hklein(AT)planet.nl), May 08 2009
EXTENSIONS
a(10)-a(18) from Donovan Johnson, May 26 2009
a(19)-a(24) from Michel Marcus, Sep 21 2012
STATUS
approved