A354769 Numbers k such that d(k)/k = sup {d(m)/m | m > k}, where d(k) is the number-of-divisors function A000005(k).

1, 8, 18, 90, 8400, 1201200

Offset

1,2

Comments

It is not known if this sequence is infinite.

References

David desJardins, Posting to Math Fun Mailing List, Jun 21 2022.

Links

Table of n, a(n) for n=1..6.

Crossrefs

Cf. A000005, A066523, A354768.

Sequence in context: A337836 A036747 A151351 * A113563 A173734 A219524

Adjacent sequences: A354766 A354767 A354768 * A354770 A354771 A354772

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 22 2022

Status

approved