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A359153
Numbers of the form 4u+3 with an odd number of prime factors (counted with multiplicity).
3
3, 7, 11, 19, 23, 27, 31, 43, 47, 59, 63, 67, 71, 75, 79, 83, 99, 103, 107, 127, 131, 139, 147, 151, 163, 167, 171, 175, 179, 191, 195, 199, 207, 211, 223, 227, 231, 239, 243, 251, 255, 263, 271, 275, 279, 283, 307, 311, 331, 343, 347, 359, 363, 367, 379, 383, 387, 399, 419, 423, 431, 435, 439, 443
OFFSET
1,1
PROG
(PARI) isA359153(n) = A359152(n);
CROSSREFS
Intersection of A004767 and A026424.
Setwise difference A067019 \ A359151.
Setwise difference A004767 \ A359163.
Cf. A002145 (subsequence).
Cf. A359152 (characteristic function).
Sequence in context: A117510 A160227 A134442 * A094179 A085760 A179481
KEYWORD
nonn
AUTHOR
Antti Karttunen, Dec 17 2022
STATUS
approved