What is the next number in the sequence 3 5 9 17 July 8, 2019 16 32 64 128 What is the next number in the sequence 2 3 5 9 17 1 3 9 27 pattern rule 3 7 15 31 series 2 3 5 9 17 _ what is the next number in the sequence 1 4 9 16 and 25 sequence 5 + 9 = 14