All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers > Sequences
Fun sequence (Posted on 2013-03-01) Difficulty: 2 of 5
1, 3, 10, 33, 109, ?...

No Solution Yet Submitted by Math Man    
No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution ?... SPOILER Comment 1 of 1
a(6)=360=3*109+33

a(n)=3*a(n-1)+(n-2)

The solution can be obtained either:

a) by assuming recurrence like a(n)=A*a(n-1)+B*a(n-2)+C
    & evaluating A,B,C from the given members of the "fun (?)" seq.
or

b)  check-in  @ OEIS

  Posted by Ady TZIDON on 2013-03-01 17:52:44
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information