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A099318 Smallest k>1 such that k*(n-th minimal number) is also a minimal number. 2
2, 2, 3, 2, 2, 3, 2, 4, 3, 2, 3, 2, 4, 2, 3, 3, 2, 5, 4, 2, 4, 3, 3, 2, 4, 3, 2, 5, 3, 4, 3, 2, 5, 4, 4, 3, 2, 4, 2, 3, 7, 3, 3, 3, 2, 5, 2, 4, 5, 4, 4, 4, 5, 2, 2, 3, 3, 3, 4, 2, 7, 3, 2, 7, 2, 2, 5, 5, 3, 3, 4, 4, 5, 3, 2, 3, 5, 2, 2, 4, 3, 4, 2, 4, 3, 4, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A minimal number is the smallest number with a given number of divisors, see A007416.

Is a(n) in A000961? - David A. Corneth, Aug 31 2019

LINKS

David A. Corneth, Table of n, a(n) for n = 1..10000 (first 844 terms from Amiram Eldar)

FORMULA

a(n)*A007416(n) = A007416(m) for some m.

EXAMPLE

A007416(38) = A005179(64) = 7560 = 2^3*3^3*5*7;

CROSSREFS

Cf. A000961, A005179, A007416.

Sequence in context: A262945 A309674 A270516 * A187128 A255911 A091382

Adjacent sequences:  A099315 A099316 A099317 * A099319 A099320 A099321

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Oct 12 2004

EXTENSIONS

More terms from Amiram Eldar, Aug 31 2019

STATUS

approved

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Last modified April 11 18:59 EDT 2021. Contains 342888 sequences. (Running on oeis4.)