A325935 -id:A325935 - cp's OEIS frontend

A325630 Numbers k such that A000110(k) is divisible by k.

1, 2, 35, 16833, 16989, 23684

Offset: 1

Vaclav Kotesovec, Sep 07 2019

No other terms below 50000.
From Amiram Eldar, Jun 20 2024: (Start)
Numbers k such that A166226(k) = 0.
All the terms above 2 are composites since A166226(p) == 2 (mod p) for prime p. (End)
No other terms below 90000. - Michael S. Branicky, Jan 09 2025

			35 is in the sequence because A000110(35) = 35 * 8045720086273150473238297902.

Cf. A000110, A051130, A066562, A073877, A113883, A166226, A280727, A325935.

Cf. A014847, A016089, A023172, A051177, A056848.

Select[Range[1000], Divisible[BellB[#], #] &]

A327433 Smallest k > 2, such that A000587(k) is divisible by n.

Original entry on oeis.org

3, 5, 6, 11, 8, 20, 10, 14, 6, 8, 14, 35, 16, 47, 41, 14, 12, 20, 22, 11, 15, 14, 26, 74, 8, 44, 74, 47, 23, 41, 19, 14, 32, 20, 47, 35, 18, 71, 19, 206, 19, 71, 25, 14, 41, 26, 50, 74, 150, 8, 20, 215, 56, 74, 39, 86, 22, 23, 10, 230, 16, 191, 15, 38, 44, 32

Offset: 1

Vaclav Kotesovec, Sep 10 2019

nonn

Conjecture: Such number exists for all n.

Vaclav Kotesovec, Table of n, a(n) for n = 1..4900

Cf. A000587, A325935, A327432.

cp's OEIS Frontend

A325630 Numbers k such that A000110(k) is divisible by k.

Views

Author

Keywords

Comments

Examples

Crossrefs

Programs

Mathematica