OFFSET
1,2
COMMENTS
The number of divisors of a(n) is n.
a(n+1)-a(n) does not equal a(m+1)-a(m) for any m not equal to n, n and m >= 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Leroy Quet, Apr 19 2010
EXTENSIONS
More terms from Farideh Firoozbakht, Mar 20 2010
STATUS
approved