Find the upcoming numbers in this series.
3, 13, 35, 109, 323,?
3 x 3 = 9 + 4 = 13 13 x 3 = 39 – 4 = 35 35 x 3 = 105 + 4 = 109 109 x 3 = 327 – 4 = 323 323 x 3 = 969 + 4 = 973
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