OFFSET
1,2
FORMULA
a(n) = A005117(2*n-1). - Amiram Eldar, Mar 04 2024
MATHEMATICA
Select[Range[200], SquareFreeQ][[1;; -1;; 2]] (* Amiram Eldar, Mar 04 2024 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Nov 19 2004
EXTENSIONS
More terms from Hugo Pfoertner, Nov 20 2004
Offset corrected by Amiram Eldar, Mar 04 2024
STATUS
approved