OFFSET
1,1
EXAMPLE
MATHEMATICA
Select[Table[5*n*(n + 1)/2 + 1, {n, 0, 225}], FactorInteger[#][[;; , 2]] == {1, 1, 1} &] (* Amiram Eldar, Sep 07 2023 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Massimo Kofler, Sep 07 2023
STATUS
approved