1 5 9 7 2 July 8, 2019 16 32 64 128 1 5 9 7 24 1 5 9 20 7 5 1 9 7 2 3 1 3 5 9 y 7 2 1 3 5 7 9 2n 1 formula 1 3 5 7 9 2n 1 sum formula 1 3 5 7 9 2n 1 1 5 9 2 6 7 1 5 9 * 2 4 7 9 5 7 1 23 1 2 3 5 7 9 arithmetic sequence 9 1 5 x 2 7 10 1 5 9 х 2 4 7 1 5 2 7 4 9 sequence 8 9 5 7 1 2
