OFFSET
1,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..123
Blair Kelly, Fibonacci and Lucas Factorizations.
EXAMPLE
a(1) = 40 because 40th Fibonacci number consists of 6 distinct prime factors (i.e., 102334155 = 3 x 5 x 7 x 11 x 41 x 2161).
a(31) = 341 because F(341)= 89 * 557 * 2417 * 761227665342913 * 197907695243868721 * 4558282384863830955384586674337 has exactly 6 prime factors.
PROG
(PARI) n=1; while(n<330, if(omega(fibonacci(n))==6, print1(n, ", ")); n++)
CROSSREFS
KEYWORD
nonn
AUTHOR
Shyam Sunder Gupta, Feb 19 2006
EXTENSIONS
More terms from Jonathan Vos Post, Mar 22 2006
Corrected by Ryan Propper, Apr 26 2006
a(55)-a(107) from Max Alekseyev, Aug 18 2013
STATUS
approved