A358776 Positive integers with an even number of prime factors (counting repetitions) that sum to an odd number.

6, 10, 14, 22, 24, 26, 34, 38, 40, 46, 54, 56, 58, 62, 74, 82, 86, 88, 90, 94, 96, 104, 106, 118, 122, 126, 134, 136, 142, 146, 150, 152, 158, 160, 166, 178, 184, 194, 198, 202, 206, 210, 214, 216, 218, 224, 226, 232, 234, 248, 250, 254, 262, 274, 278, 294, 296, 298, 302, 306, 314, 326, 328, 330, 334

Offset: 1

Author

Antti Karttunen, Dec 01 2022

Keywords

• nonn

Comments

All terms are even because they must have an odd 2-adic valuation.

Crossrefs

Setwise difference A028260 \ A345452.

Intersection of any two of A028260, A036554, A335657.

Cf. A358775 (characteristic function).

Not 2*A249370 (for example, 105 is missing from the latter).

Programs

PARI

isA358776(n) = A358775(n);