OFFSET
1,1
COMMENTS
A364997 is a proper subset.
The asymptotic density of this sequence is 1/6 - 1/(2*Pi^2). - Amiram Eldar, Jan 20 2024
LINKS
Michael De Vlieger, Table of n, a(n) for n = 1..10000
FORMULA
MATHEMATICA
Select[Range[261], And[Nor[SquareFreeQ[#], PrimePowerQ[#]], Mod[#, 6] != 0] &]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Michael De Vlieger, Jan 15 2024
STATUS
approved