SOLUTION: what will come after 1,3,9,31,129

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Question 530595: what will come after 1,3,9,31,129
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

1*1+2 = 3
3*2+3 = 9
9*3+4 = 31
31*4 + 5 = 129
129*5 + 6 = 651