OFFSET
1,1
FORMULA
Asymptotically: a(n)= C*Log(n) + 0(Log(n)) with C a constant = 8.2... (this constant doesn't depend on initial values f(1), t(1), t(2), t(3) while f(2)=n )
CROSSREFS
KEYWORD
nonn
AUTHOR
Benoit Cloitre, Aug 05 2002
STATUS
approved