A355942 Numbers k such that k is a multiple of A326042(k).

1, 2, 5, 6, 10, 14, 24, 29, 30, 38, 55, 58, 70, 86, 102, 110, 113, 120, 145, 168, 174, 190, 220, 226, 261, 290, 312, 330, 362, 370, 406, 430, 438, 456, 510, 522, 565, 574, 660, 678, 696, 758, 770, 790, 840, 870, 1032, 1055, 1102, 1130, 1305, 1320, 1540, 1560, 1582, 1595, 1608, 1630, 1711, 1810, 2030, 2088, 2090, 2110

Offset

1,2

Comments

If both x and y are terms and gcd(x, y) = 1, then x*y is also present.

Applying A003961 to these terms and sorting into ascending order gives A348943.

Links

Table of n, a(n) for n=1..64.

Index entries for sequences computed from indices in prime factorization

Index entries for sequences related to sigma(n)

Formula

{k | A326042(k) divides k}.

Prog

(PARI) A355942(n) = (1==A348942(n));

Crossrefs

Positions of 1's in A348942.

Cf. A000203, A003961, A064989, A326042, A348943.

Sequence in context: A316946 A005984 A172186 * A178761 A274037 A227975

Adjacent sequences: A355939 A355940 A355941 * A355943 A355944 A355945

Keyword

nonn

Author

Antti Karttunen, Jul 23 2022

Status

approved