A364718 Numbers k such that d(k) > d(k+1) > d(k+2), where d(n) is the number of divisors of n.

45, 80, 81, 105, 165, 224, 225, 260, 261, 272, 315, 324, 345, 357, 384, 405, 435, 440, 441, 464, 465, 476, 477, 495, 512, 555, 560, 561, 567, 585, 594, 595, 620, 624, 627, 650, 651, 675, 704, 714, 715, 795, 800, 825, 836, 837, 855, 860, 861, 884, 885, 891, 896, 915

Offset

1,1

Links

Seiichi Manyama, Table of n, a(n) for n = 1..10000

Prog

(PARI) isok(n) = numdiv(n)>numdiv(n+1) && numdiv(n+1)>numdiv(n+2);

Crossrefs

Cf. A000005, A075029, A364657.

Cf. A074827, A364719, A364720.

Sequence in context: A362792 A049104 A226788 * A102578 A026060 A138171

Adjacent sequences: A364715 A364716 A364717 * A364719 A364720 A364721

Keyword

nonn,easy

Author

Seiichi Manyama, Aug 04 2023

Status

approved