OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..268
J. Pe, On a Generalization of Perfect Numbers, J. Rec. Math., 31(3) (2002-2003), 168-172.
MATHEMATICA
f[x_] := Floor[ x^(3/4)]; Select[ Range[ 2, 10^4], 2 * f[ # ] == Apply[ Plus, Map[ f, Divisors[ # ] ] ] & ]
CROSSREFS
KEYWORD
nonn
AUTHOR
Joseph L. Pe, Dec 20 2001
EXTENSIONS
a(21)-a(41) from Amiram Eldar, Sep 26 2019
STATUS
approved