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A359373
Nonmultiples of 4 that have an odd number of prime factors (with multiplicity).
4
2, 3, 5, 7, 11, 13, 17, 18, 19, 23, 27, 29, 30, 31, 37, 41, 42, 43, 45, 47, 50, 53, 59, 61, 63, 66, 67, 70, 71, 73, 75, 78, 79, 83, 89, 97, 98, 99, 101, 102, 103, 105, 107, 109, 110, 113, 114, 117, 125, 127, 130, 131, 137, 138, 139, 147, 149, 151, 153, 154, 157, 162, 163, 165, 167, 170, 171, 173, 174
OFFSET
1,1
FORMULA
{k | A008836(k) < 0 and A010873(k) > 0}.
MATHEMATICA
Select[Range[200], And[LiouvilleLambda[#] < 0, ! Divisible[#, 4]] &] (* Michael De Vlieger, Dec 28 2022 *)
PROG
(PARI) isA359373(n) = A359372(n);
CROSSREFS
Intersection of A026424 and A042968.
Setwise difference A042968 \ A359371.
Positions of negative terms in A358839.
Cf. A001222, A008836, A010873, A067019 (subsequence), A166486, A359372 (characteristic function).
Sequence in context: A171055 A117285 A100546 * A117094 A171057 A229786
KEYWORD
nonn
AUTHOR
Antti Karttunen, Dec 28 2022
STATUS
approved