OFFSET
1,2
COMMENTS
All odd positive integers are in the sequence, since every divisor of any odd number is isolated.
EXAMPLE
The divisors of 50 are 1,2,5,10,25,50. Of these, 1 and 2 are non-isolated divisors and 5,10,25,50 are isolated divisors. There are fewer non-isolated divisors (2 in number) than isolated divisors (4 in number), so 50 is in the sequence.
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Oct 20 2007
EXTENSIONS
Extended by Ray Chandler, Jun 24 2008
STATUS
approved