3 2 9 1 5 7 July 8, 2019 16 32 64 128 3 2 9 x 1 5 7 3 2 3 а 4 8 9 1 5 7 1 2 3 5 7 9 arithmetic sequence 5 12y 3 2 9 1 7 8y 5 1 18 1 2 3 5 7 9 next number 9 1 3 minus 5 2 7 1 3 v 5 2 9 v 7
