Question 547746
We have the pattern 
2,3,5,9,?,?,?, 

If we look at what we have added each time we add 1 then 2 then 4... no real pattern there.  

After some trying out patterns we see that 
2*2-1=3
3*2-1=5
5*2-1=9


So we have a pattern -- the previous number times 2 minus 1.  


So the next term is 9*2-1=17
and the term after is 
17*2-1=33



I will let you figure out the next term 



Hopefully this helps!