A171784 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A171784

Fourth smallest divisor of smallest number having exactly n divisors.

6, 8, 4, 8, 4, 4, 4, 8, 4, 8, 4, 4, 4, 8, 4, 8, 4, 4, 4, 8, 4, 4, 4, 4, 4, 8, 4, 8, 4, 4, 4, 4, 4, 8, 4, 4, 4, 8, 4, 8, 4, 4, 4, 8, 4, 4, 4, 4, 4, 8, 4, 4, 4, 4, 4, 8, 4, 8, 4, 4, 4, 4, 4, 8, 4, 4, 4, 8, 4, 8, 4, 4, 4, 4, 4, 8, 4, 4, 4, 8, 4, 4, 4, 4, 4, 8, 4, 4, 4, 4, 4, 4, 4, 8, 4, 4, 4, 8, 4, 8, 4, 4, 4, 8, 4

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

OFFSET

4,1

COMMENTS

Fourth column of triangle in A081532. - N. J. A. Sloane, Oct 12 2010.

LINKS

David A. Corneth, Table of n, a(n) for n = 4..10003 (first 1997 terms from Antti Karttunen)

EXAMPLE

a(5) = 8 because divisors of 16 are 1,2,4,8,16.

CROSSREFS

Cf. A005179, A081532, A171783.

Sequence in context: A195492 A269802 A269991 * A200133 A021150 A347407

Adjacent sequences: A171781 A171782 A171783 * A171785 A171786 A171787

KEYWORD

nonn

AUTHOR

J. Lowell, Oct 12 2010

EXTENSIONS

More terms from R. J. Mathar, Oct 13 2010

STATUS

approved