%I #8 Dec 17 2022 20:03:09
%S 15,35,39,51,55,87,91,95,111,115,119,123,135,143,155,159,183,187,203,
%T 215,219,235,247,259,267,287,291,295,299,303,315,319,323,327,335,339,
%U 351,355,371,375,391,395,403,407,411,415,427,447,451,459,471,495,511,515,519,527,535,543,551,559,579,583
%N Numbers of the form 4u+3 with an even number of prime factors (counted with multiplicity).
%e 135 = 3 * 3 * 3 * 5 has an even number of prime factors and is of the form 4u+3, therefore 135 is included in this sequence.
%o (PARI) isA359163(n) = A359162(n);
%Y Intersection of A004767 and A028260.
%Y Setwise difference A004767 \ A359153.
%Y Setwise difference A046337 \ A359161.
%Y Cf. A359162 (characteristic function).
%Y Cf. A080774 (subsequence).
%K nonn
%O 1,1
%A _Antti Karttunen_, Dec 17 2022