SOLUTION: 81,108,144

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Question 746572: 81,108,144
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
108/81=4/3
144/108=4/3

looks like it's a geometric sequence with a1=81:

%0D%0Aa%5Bn%5D=81%284%2F3%29%5En-1%0D%0A


:)