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

1, 2, 35, 16833, 16989, 23684

Offset: 1

Author

Vaclav Kotesovec, Sep 07 2019

Keywords

• nonn
• hard
• more

Comments

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

Examples

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

Crossrefs

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

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

Programs

Mathematica

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