6 9 13 4 July 8, 2019 16 32 64 128 4 6 9 13 1 by 2 4 6 9 13 next number 4 6 9 13 2 3 4 6 9 13 3 4 6 9 13 sequence formula 3 4 6 9 13 what next А 4 6 9 13 3 4 6 9 13 what is the next number in the series 3 4 6 9 13 what is the next number 9 7x 13 )- 6 4x 18 9 6 x 13 4 4 6 9 13 5 7 9 6 4 )+ 13 4 6 9 13 pattern 4 6 9 13 1
