OFFSET
1,1
COMMENTS
Fib(a(n)) mod 10 > trib(a(n)) mod 10.
Natural density 72/155, slightly higher than the 9/20 that would be expected with random sequences mod 10. - Charles R Greathouse IV, Jul 18 2013
LINKS
T. D. Noe, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = a(n-864) + 1860. - Charles R Greathouse IV, Jul 18 2013
MATHEMATICA
nn = 250; Module[{f = Mod[Fibonacci[Range[nn]], 10], t = Mod[LinearRecurrence[{1, 1, 1}, {1, 1, 1}, nn], 10], ft}, ft = Thread[{f, t}]; Select[Range[nn], ft[[#, 1]] > ft[[#, 2]] &]] (* Harvey P. Dale, Dec 25 2012 *)
CROSSREFS
KEYWORD
nonn,base,easy,less
AUTHOR
Carmine Suriano, Feb 11 2011
STATUS
approved