OFFSET
1,1
EXAMPLE
a(5) = 3 because A093449(5) = 13*14*15.
CROSSREFS
KEYWORD
hard,more,nonn
AUTHOR
Amarnath Murthy, Apr 03 2004
EXTENSIONS
Edited, corrected and extended by David Wasserman, Mar 21 2007
a(14)-a(17) from Donovan Johnson, Sep 13 2008
STATUS
approved