%I #9 Sep 22 2022 01:40:05

%S 1,8,18,90,8400,1201200

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

%C It is not known if this sequence is infinite.

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

%Y Cf. A000005, A066523, A354768.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Jun 22 2022