OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
EXAMPLE
The divisors of 40 are 1,2,4,5,8,10,20,40. The two middle divisors are 5 and 8. Between 5 and 8 (and not including 5 and 8) there is exactly one prime (7). So 40 is included in the sequence.
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Jul 27 2008
EXTENSIONS
a(9)-a(56) from Donovan Johnson, Sep 27 2008
STATUS
approved