OFFSET
1,1
LINKS
EXAMPLE
F(324) = 2^4 * 3^5 * 17 * 19 * 53 * 107 * 109 * 2269 * 3079 * 4373 * 5779 * 19441 * 11128427 * 62650261 * 1828620361 * 6782976947987 has 16 distinct prime factors, so 324 is in the sequence.
CROSSREFS
KEYWORD
hard,more,nonn
AUTHOR
Ryan Propper, Apr 26 2006
EXTENSIONS
a(25)-a(32) from Max Alekseyev, Aug 18 2013
STATUS
approved