A364715 Numbers k such that d(k) < d(k+1) < d(k+2), where d(n) is the number of divisors of n.

61, 62, 73, 163, 187, 193, 194, 206, 254, 274, 277, 278, 283, 313, 355, 361, 362, 397, 398, 403, 421, 422, 427, 454, 457, 458, 482, 493, 523, 538, 583, 613, 614, 661, 673, 691, 733, 746, 757, 758, 763, 823, 853, 866, 889, 926, 934, 943, 955, 997, 998, 1003, 1027

Offset: 1

Author

Seiichi Manyama, Aug 04 2023

Keywords

• nonn
• easy

Crossrefs

Cf. A000005, A075028, A364659, A364718.

Cf. A074775, A364716, A364717.

Programs

PARI

isok(n) = numdiv(n)