3, 13, 65, 585, 7605, 129285, ????, ????

• 13, 13, 65, 585, 7605, 129285, ????, ????
  
  Soln:
  13
  13*1=13
  13*5=65
  65*9=585
  585*13=7605
  7605*17=129285
  129285*21=2714985
  2714985*25=67874625
• 12 years agoHelpfull: Yes(8) No(0)