perplexus.info :: Sequences : I recognise it..... .....A bit

Home > Numbers > Sequences

I recognise it..... .....A bit (Posted on 2004-08-27)

Fill in the blanks.

1, 1, 2, 4, 8, ?, ?, 56, 108, 208, 401

See The Solution Submitted by Juggler

Rating: 4.0000 (2 votes)

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

Puzzle Solution

| Comment 3 of 4 |

For i>4, the terms of the given sequence is in conformity with the following recurrance relation:

T(i) = T(i-1) + T(i-2) + T(i-3) + T (i-4); and:

T(6) = 1+ 2 + 4 + 8 = 15
T(7) = 2 + 4 + 8 + 15 = 29

Thus, the required missing numbers are 15 and 29.

Posted by K Sengupta on 2007-03-09 04:27:35

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 (5)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info