A369668 Numbers that have an even number of prime factors with multiplicity and whose arithmetic derivative is of the form 4k+3.

10, 26, 34, 58, 74, 82, 90, 106, 122, 146, 178, 194, 202, 210, 218, 226, 234, 250, 274, 298, 306, 314, 330, 346, 362, 386, 394, 458, 466, 482, 490, 514, 522, 538, 546, 554, 562, 570, 586, 626, 634, 650, 666, 674, 690, 698, 706, 714, 738, 746, 770, 778, 794, 802, 810, 818, 842, 850, 858, 866, 898, 914, 922, 930, 954

Offset: 1

Author

Antti Karttunen, Feb 08 2024

Keywords

• nonn

Comments

All terms are of the form 4m+2 because if n has an even number of odd prime factors, then its arithmetic derivative A003415(n) is even. See A235991 and A235992.

Links

• Antti Karttunen, Table of n, a(n) for n = 1..10000

Crossrefs

Intersection of A028260 and A358774.

Intersection of A358774 and A369966.

Cf. A001222, A003415, A235991, A235992, A369667 (characteristic function).

Cf. also A369663.

Programs

PARI

\\ See A369667.