(19+22)/2 = 20.5
2 5 9 10 13 17 19
2 9 5 13 10 19 17
20.520.520.520.5
10 7 11 12 9 13 14 11 15 16 13 17 18 15 19 20...
1, 3, 5, 7, 9, 11, 13, 15, 17, 19. 1, 3, 5, 7, 9, 11, 13, 15, 17, 19. 1, 3, 5, 7, 9, 11, 13, 15, 17, 19. 1, 3, 5, 7, 9, 11, 13, 15, 17, 19.
The number after 17 is 27. 2+7 = 9 9 - 4 = 5 5 + 8 = 13 13 - 3 = 10 10 + 9 = 19 19 - 2 = 17 17 + 10 = 27
2 9 5 13 10 19 17 27 26 37 37 49 50 ...The sequence is composed of these two sub-sequences:2 5 10 17 26 37 50 (+3,+5,+7,+9,+11,...)9 13 19 27 37 49 (+4,+6,+8,+10,+12,...)
12
13 - 5 + 112 = 9
2 9 5 13 10 19 17 27 26 37 37
9, 10, 12, 12, 12, 13, 15, 19, 22, 27, 27, 29, 36