OFFSET
1,1
COMMENTS
This sequence is the union of all terms of A028982 (squares and twice squares) that are evil (A001969), and all odious numbers (A000069) that are neither a square or twice a square. See also A231431, A235001.
This is a subsequence of A004169, numbers k such that phi(k) is not a power of 2. See comment in A295298 for the reason. - Antti Karttunen, Nov 27 2017
LINKS
MATHEMATICA
Select[Range@ 169, UnsameQ @@ Map[EvenQ, {DivisorSigma[1, #], DigitCount[#, 2, 1]}] &] (* Michael De Vlieger, Nov 26 2017 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Nov 26 2017
STATUS
approved