1. ## pattern

i am stuck on an exercise!!!i can't find the pattern within

16,1,20,20,5,18,.......

2. What reason do you have to think there IS a pattern?

3. ## What reason do you have to think there IS a pattern?

because they said so and they asked me to find the following number!!!

4. Originally Posted by franckherve1
because they said so and they asked me to find the following number!!!
Here is a news flash for them:
The largest collection of integer sequences available says that no such sequence is known to exist.
Check it out at: The On-Line Encyclopedia of Integer Sequences

5. Originally Posted by franckherve1
i am stuck on an exercise!!!i can't find the pattern within

16,1,20,20,5,18,.......
Look at the common difference for if it was a geometric or arithmetic sequence, or even a recursive formula there would have to be a distinguishable pattern

just look at the differences:

$\displaystyle \frac{1}{16}=0.0625$

$\displaystyle \frac{20}{1}=1$

$\displaystyle \frac{20}{20}=1$

$\displaystyle \frac{5}{20}=0.25$

$\displaystyle \frac{18}{5}=3.6$

As you can see there is no common difference, and no possible way for it to be an arithmetic or geometric progression.There is also no way to make a recursive formula for the sequence.