4 3-6 9 July 8, 2019 16 32 64 128 4 3 6 9 4 3 6 9 5 3 4 6 9 13 3 4 6 9 18 3 4 6 9 13 sequence formula 3 4 6 9 14 3 4 6 9 14 sequence 3 4 6 9 10 3 4 6 9 18 fraction 3 4 6 9 2 3 4 6 9 13 what next 3 4 6 9 8 3 4 6 9 13 what is the next number 1 4 3 6 9 4 3 x 6 9