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

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