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A225738 Number of numbers k such that k < d(k)^(n/10), where d(k) is the number of divisors of k. 11
0, 1, 1, 3, 4, 4, 7, 14, 21, 29, 52, 89, 155, 284, 528, 1018, 2046, 4282, 9272, 21466, 50967 (list; graph; refs; listen; history; text; internal format)
OFFSET

10,4

LINKS

Table of n, a(n) for n=10..30.

MATHEMATICA

Table[f = 0; Do[If[k < DivisorSigma[0, k]^(n/10), f++], {k, 10^4}]; f, {n, 10, 20}]

CROSSREFS

Cf. A034884 (n < d(n)^2), A056757 (n < d(n)^3), A225729-A225737.

Sequence in context: A121924 A094948 A241740 * A186679 A275742 A161496

Adjacent sequences:  A225735 A225736 A225737 * A225739 A225740 A225741

KEYWORD

nonn

AUTHOR

T. D. Noe, May 14 2013

STATUS

approved

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Last modified February 22 12:24 EST 2020. Contains 332135 sequences. (Running on oeis4.)