1,4,11,30,85,__?

• 1, 4, 11, 30, 85, 248
  i.e.
  1, 3^1+1, 3^2+2, 3^3+3, 3^4+4 , 3^5+5
  
  so answer is 248
  
• 8 years agoHelpfull: Yes(0) No(1)
• The answer is 248.
  If we observe the series,
  1, 1*3+1=4, 4*3-1=11, 11*3-3=30, 30*3-5=85, 85*3-7=248
• 8 years agoHelpfull: Yes(0) No(0)