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Discussion Starter #1
In this game you try to figure out the next number in the sequence, and list a sequence or sequences for others to figure out. The previous ones don't have to all be answered for you to list yours, and you can answer any in the thread, not just in the previous post.

1, 2, 3, 8, 15, ?
1, 4, 27, 256, ?
1, 4, 10, 20, ?
0, 1, 4, 12, 32, ? Also, what do these numbers describe?
1, 36, 1225, 41616, ? (harder than the rest)
 

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i think I got it right...... 1 2 3 5 8 15 21

A really easy one for ya! 1-2-2-4-8

EDIT: OK...I got it wrong. Here's one for you,

1-1-2-3-5-8-13-21 (typo there boscosmum... you were correct! 8) )

A really easy one for ya! 1-2-2-4-8
 

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Discussion Starter #3
^ 1-2-2-4-8-32 (a term is the product of the previous 2 terms). Unless one of the 2's you typed is accidental and it's 1-2-4-8-16.


There isn't a 5 in my first sequence and 21 isn't next after 15.
 

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Spuzzi said:
1, 4, 10, 20, ? *35?*

:p

2-4-16-?
2-8-128-32768?
Can you tell me how you figured this out?
I want to get what you guys are doing...but I need a couple examples
along with the solutions. (dont laugh)
 

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2-4-16-256
2-8-128-32768-2147483648 COrrect!

OK.

So...first you find the difference from 1, 4, 10 and 20

1___4____10___20
3____6____10

Then you find the difference fom 3, 6 and 10.

3____4

but there is no difference so you add to the sequence.

3____4____5

Now you add

20
10
5
__
35 My grandpa taught me how to do this.
 

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Discussion Starter #12
1, 2, 3, 8, 15, 48...

1 = 1!! = 1
2 = 2!! = 2
3 = 3!! = 3 * 1
8 = 4!! = 4 * 2
15 = 5!! = 5 * 3 * 1
48 = 6!! = 6 * 4 * 2
 

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Discussion Starter #13
Some more sequences:

2, 5, 8, 10, 13, ?
1, 2, 8, 33, ?
3, 10, 42, 330, ?


Also, these are still open:

1, 4, 27, 256, ?
0, 1, 4, 12, 32, ? Also, what do these numbers describe?
1, 36, 1225, 41616, ? (harder than the rest)
 
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