

A085083


Index of the first occurrence of n in A085082. Smallest number having divisors with n distinct prime signatures.


0



1, 2, 4, 8, 12, 32, 24, 128, 48, 120, 96, 144, 192, 360, 288, 480, 768, 576, 720, 2592, 1152, 1728, 2160, 1440, 3840, 3456, 4608, 7200, 2880, 4320, 15360, 15120, 10080, 5760, 20736, 36864, 8640, 27648, 11520, 20160, 50400, 30240, 25920, 17280, 82944
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,2


LINKS

Table of n, a(n) for n=1..45.


EXAMPLE

a(5) = 12, the divisors of 12 are 1,2,3,4,6 and 12 and the five distinct prime signatures arising are 1, p, p*q, p^2 and p^2*q.


CROSSREFS

Cf. A085082.
Sequence in context: A082906 A204088 A187941 * A076745 A007374 A105207
Adjacent sequences: A085080 A085081 A085082 * A085084 A085085 A085086


KEYWORD

nonn


AUTHOR

Amarnath Murthy, Jul 01 2003


EXTENSIONS

More terms from David Wasserman, Jan 25 2005


STATUS

approved



