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

Home > Numbers > Sequences
Even, or Odd? (Posted on 2005-06-20) Difficulty: 1 of 5
1, 2, 2, 1, 2, 2, 4, 2, 8, 4, 32, 8, 256, ?, ?, ?, ...

See The Solution Submitted by Dustin    
Rating: 2.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution bingo erik , i like ur approach | Comment 13 of 15 |

they are indeed two series merged together , but lets do a little bit fancier thing with it ...it can be considered a single sequence

look at the series as . view it as power of 2

 

 

 

20, 21, 21, 20, 21, 21, 22, 21, 23, 22, 25, 23, 28       <o:p></o:p>

<o:p> </o:p>

See any catch above ??? look at the powers of  2

<o:p> </o:p>

0,1,1,0,1,1,2,1,3,2,5,3,8……

<o:p> </o:p>

First + second = third

                           third + fourth = fifth

                                                     fifth + sixth = seventh …… and so on ……

<o:p> </o:p>

more interestingly these First , third , fifth , seventh , ninth , and so on values form an interesting sequence ………  the Fibonacci   0 1 1 2  3 5 8 13(the missing fifteenth number of the series is 213)  missing fourteenth number is 25 (because 8+5=13 conforming with our above sequence or 5 can be viewed as Fibonacci predecessor of 8 whatever ya want) . next numbers are

  213,28,221   (fifteenth,sixteenth,seventeenth numbers repectively)

<o:p> </o:p>

so the missing numbers are 32, 8192, 256 ....(fourteenth,fifteenth and sixteeenth numbers)

<o:p> </o:p>

<o:p> </o:p>

     20, 21, 21, 20, 21, 21, 22, 21, 23, 22, 25, 23, 28 ,25 ,213,28,221<o:p></o:p>

<o:p> </o:p>

Every three number pairs (1,2,3 or 3,4,5 or 5,6,7  or 7,8,9 shows our fibbonacci sequence)

<o:p> </o:p>

Ahahahahahaha ……. complicated the matters ….. actually just read Da Vinci’s Code by Dan Brown …so bit obsessed with fibbonacci ……   you are right Eric ….well done


  Posted by phi on 2005-06-22 07:08:28
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 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information