A 4 6 9 13 July 8, 2019 16 32 64 128 А 4 6 9 13 4 6 9 13.5 4 6 9 13 1 by 2 4 6 9 13 4 6 9 13 next number 4 6 9 13 2 4 6 9 13.5 series 4 6 9 13.5 pattern 4 6 9 13 pattern 4 6 9 13 1 4 a 9
