OFFSET
1,2
COMMENTS
A lower bound on A287881.
LINKS
N. J. A. Sloane, Table of n, a(n) for n = 1..20000
MATHEMATICA
Accumulate[Table[If[SquareFreeQ[n], A080670[[n]], 0], {n, 57}] ] (* Robert Price, Mar 16 2020 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jun 19 2017
STATUS
approved