Find the missing number

3,5,9,17,_

• 3+2=5
  5+4=9
  9+8=17
  17+16=33
  
  hence,missing number is 33
• 13 years agoHelpfull: Yes(4) No(0)
• 3+2=5
  5+2*2=9
  9+2*2*2=17
  17+2*2*2*2=33
  
• 12 years agoHelpfull: Yes(0) No(0)
• answer: 33
  3*2-1=5
  5*2-1=9
  9*2-1=17
  17*2-1=33
• 12 years agoHelpfull: Yes(0) No(0)