OFFSET
1,1
COMMENTS
All the terms are composites.
LINKS
Stefano Spezia, Table of n, a(n) for n = 1..10000
EXAMPLE
28 is a term since 1*2*4*7*14 = 784 is not a cube.
MATHEMATICA
Select[Range[120], !IntegerQ[Product[Part[Divisors[#], i], {i, DivisorSigma[0, #]-1}]^(1/3)] &]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Stefano Spezia, Sep 04 2024
STATUS
approved