A373484 Numbers k such that A083345(k) and A276085(k) are both multiples of 3, where A276085 is fully additive with a(p) = p#/p, and A083345 is the numerator of the fully additive function with a(p) = 1/p.

1, 8, 35, 64, 65, 77, 95, 119, 125, 135, 143, 155, 161, 185, 203, 209, 215, 221, 275, 280, 287, 297, 299, 305, 323, 329, 335, 341, 343, 365, 371, 377, 395, 407, 413, 425, 437, 459, 473, 485, 497, 512, 515, 520, 527, 533, 545, 551, 575, 581, 605, 611, 616, 621, 623, 629, 635, 637, 671, 689, 695, 707, 713, 725, 731, 737

Offset

1,2

Comments

A multiplicative semigroup: if m and n are in the sequence, then so is m*n.

Links

Antti Karttunen, Table of n, a(n) for n = 1..20000

Prog

(PARI) isA373484 = A373483;

Crossrefs

Intersection of A339746 and A369644.

Subsequence of A373144.

Positions of multiples of 3 in A373485.

Cf. A083345, A276085, A373483 (characteristic function).

Sequence in context: A317263 A275360 A281147 * A217187 A214725 A136016

Adjacent sequences: A373481 A373482 A373483 * A373485 A373486 A373487

Keyword

nonn

Author

Antti Karttunen, Jun 09 2024

Status

approved