OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
FORMULA
EXAMPLE
a(8) = 21 because smallest number with 8 divisors is 24, 24^2 = 576 and 576 has 21 divisors.
MATHEMATICA
a = {}; i = 1; For[n = 1, n < 60, n++, While[DivisorSigma[0, i] < n, i++ ]; AppendTo[a, DivisorSigma[0, i^2]]]; a (* Stefan Steinerberger, Aug 31 2008 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Stefan Steinerberger, Aug 31 2008
EXTENSIONS
Edited by R. J. Mathar, Sep 01 2008, Dec 15 2008
Extended beyond a(8) by R. J. Mathar, Aug 31 2008
STATUS
approved