Продовж послідовність 7 12 9 14 11 16 13 ...

7,12,9, 14, 11, 16, 13, 18, 15, 20,17, 22, 19,24, 21, 26, 23, 28, 25, 30, 27, 32, 29, 34, 31,36, 33, 38, 35, 40, 37, 42, 39, 44, 41,46, 43,48, 45, 50, 47, 52, 49,54, 51, 56, 53,58, 55, 60, 57, 62, 59, 64,61, 66, 63,68, 65, 70, 67, 72, 69, 74, 71, 76, 73, 78, 75, 80, 77, 82, 79, 84, 81, 86, 83, 88, 85, 90, 87, 92, 89, 94, 91, 96, 93, 98. 95. 100.