perplexus.info :: Calculus : Strange sequence

Strange sequence (Posted on 2005-11-15)

If f(0)=0 and for n>0, f(n)=n-f(f(n-1)),
what is f(1,000,000,000,000)?

Computer solutions welcome,
though a proof would be better!

See The Solution Submitted by e.g.

Rating: 3.1667 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

re(2): solution - no computer - to Bob

| Comment 6 of 9 |

(In reply to re: solution - no computer by Bob Smith)

Bob, I really don´t know. If I was in a test, I would answered the solution I posted, but, at home, I would use the computer to check!!

Charlie did it for us.

It´s a coincidence? Again, I don´t know.

Posted by pcbouhid on 2005-11-15 14:43:42

Please log in:

Forums (1)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (6)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info