A364715 - OEIS

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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

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..53.

PROG

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

CROSSREFS

Cf. A000005, A075028, A364659, A364718.

Cf. A074775, A364716, A364717.

Sequence in context: A075028 A379096 A258158 * A042859 A258157 A114085

Adjacent sequences: A364712 A364713 A364714 * A364716 A364717 A364718

KEYWORD

nonn,easy

AUTHOR

Seiichi Manyama, Aug 04 2023

STATUS

approved

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